On Sunday, three people were shot dead at two Jewish community centers in the Kansas City area. It's believed that the suspect — identified as Frazier Glenn Cross, Jr., 73 — was once the grand dragon of the Carolina Knights of the Ku Klux Klan (KKK).

The incident is a sad and disturbing reminder that the KKK still functions actively all over the United States. The group, founded in 1865, has a long history of violence mainly targeted at African-Americans, Jews, immigrants and members of the LGBT community.

The Southern Poverty Law Center (SPLC), which monitors hate groups, called the KKK "the most infamous — and oldest — of American hate groups." The KKK's website states that the organization's primary goal is to "stop White genocide." They write, "We simply believe that the United States of America was founded as a white Christian nation."

Project Censored wrote that the Internet has enabled hate groups to recruit and spread their beliefs more readily than in the past. SLPC estimates that there are between 5,000 and 8,000 active KKK members in the U.S.

Below is SPLC's list, by state, of known U.S. cities where the KKK operates and the corresponding chapter in that city. (Note: These are not the only places where the KKK operates — these are the cities identified thus far.)

Alabama

1. Pinson: International Keystone Knights of the KKK

2. Birmingham: Loyal White Knights of the KKK

3. Ashland: United Klans of America

4. Red Bay: North Mississippi White Knights Of The Ku Klux Klan

Arkansas

5. Concord: Knights of the Klu Klux Klan

6. Harrison: Knights of the Klu Klux Klan

7. Little Rock: Knight Riders Knights of the Ku Klux Klan

8. Vanndale: International Keystone Knights of the Ku Klux Klan

9. Harrison: Soldiers Of the Cross Training Institute; Knights Party Veterans League

Colorado

10. Eckert: Loyal White Knights of the Klu Klux Klan

Florida

11. Fort Myers: Knight Riders Knights of the Ku Klux Klan

12. Live Oak: Knight Riders Knights of the Ku Klux Klan

13. Cape Coral: Ku Klos Knights of the Ku Klux Klan

14. New Smyrna Beach: Loyal White Knights of the Ku Klux Klan

15. Christmas: Fort Christmas Knights Ku Klux Klan

Georgia

16. Rockledge: United Northern and Southern Knights of the Ku Klux Klan

17. Brunswick: Knight Riders Knights of the Ku Klux Klan

18. Rochelle: Knight Riders Knights of the Ku Klux Klan

19. Byron: Knight Riders Knights of the Ku Klux Klan

20. Ellijay: Knight Riders Knights of the Ku Klux Klan

21. Blairsville: International Keystone Knights of the Ku Klux Klan

22. Young Harris: International Keystone Knights of the Ku Klux Klan

23. Newnan: New Empire Knights of the Ku Klux Klan

Iowa

24. Ames: New Empire Knights of the Ku Klux Klan

Illinois

25. Chicago: United Northern and Southern Knights of the Ku Klux Klan

26. Eldorado: Knight Riders Knights of the Ku Klux Klan

27. Lemont: Knight Riders Knights of the Ku Klux Klan

28. Bloomington: Loyal White Knights of the Ku Klux Klan

Indiana

29. West College Corner: United Northern and Southern Knights of the Ku Klux Klan

30. Elwood: International Keystone Knights of the Ku Klux Klan

31. Monroe City: Ku Klos Knights of the Ku Klux Klan

32. Kokomo: Ku Klos Knights of the Ku Klux Klan; Loyal White Knights of the Ku Klux Klan

33. Scottsburg: New Empire Knights of the Ku Klux Klan

Kentucky

34. Munfordville: Ku Klos Knights of the Ku Klux Klan

35. Glens Fork: Loyal White Knights of the Ku Klux Klan

36. Corbin: New Empire Knights of the Ku Klux Klan

Louisiana

37. Slaughter: Fraternal White Knights of the Ku Klux Klan

38. Walker: Dixie Rangers Knights of the Ku Klux Klan

39. Converse: Aryan Nations Knights of the Ku Klux Klan

Maryland

40. Baltimore: Confederate White Knights of the Ku Klux Klan

Michigan

41. Fraser: United Northern and Southern Knights of the Ku Klux Klan

42. Beal City: New Empire Knights of the Ku Klux Klan

43. Gladwin: Invisible Knights of the Fiery Cross

Missouri

44. Potosi: Traditionalist American Knights of the Ku Klux Klan

45. Branson: New Empire Knights of the Ku Klux Klan

Mississippi

46. Petal: Mississippi White Knights of the Ku Klux Klan

47. Brookhaven: Mississippi White Knights of the Ku Klux Klan

48. Star: Mississippi White Knights of the Ku Klux Klan

49: Jackson: Mississippi White Knights of the Ku Klux Klan

50. Pearl: Mississippi White Knights of the Ku Klux Klan

51. Meridian: Mississippi White Knights of the Ku Klux Klan

52. Philadelphia: Mississippi White Knights of the Ku Klux Klan

53. Bruce: Mississippi White Knights of the Ku Klux Klan

54. Shannon: Mississippi White Knights of the Ku Klux Klan

55. Lucedale: Fraternal White Knights of the Ku Klux Klan

56. Dumas: North Mississippi White Knights Of The Ku Klux Klan

Montana

57. Great Falls: United Klans of America

North Carolina

58. Lenoir: Ku Klos Knights of the Ku Klux Klan

59. Benson: Loyal White Knights of the Ku Klux Klan

60. Burlington: Loyal White Knights of the Ku Klux Klan

61. Roanoke Rapids: Loyal White Knights of the Ku Klux Klan

62. Pelham: Loyal White Knights of the Ku Klux Klan

63. Eden: Loyal White Knights of the Ku Klux Klan

64. Charlotte: New Empire Knights of the Ku Klux Klan

65. Durham: New Empire Knights of the Ku Klux Klan

66. Kings Mountain: Christian Knights of the Ku Klux Klan

New Mexico

67. Silver City: Loyal White Knights of the Ku Klux Klan

New York

68. Plattsburgh: Fraternal White Knights of the Ku Klux Klan

Ohio

69. Amelia: Fraternal White Knights of the Ku Klux Klan

70. Cleveland: International Keystone Knights of the Ku Klux Klan

71. Dayton: New Empire Knights of the Ku Klux Klan; Mystic Knights Of The Ku Klux Klan

Oklahoma

72. Shawnee: United White Knights of the Ku Klux Klan

73. Oklahoma City: United White Knights of the Ku Klux Klan

74: Tulsa: United White Knights of the Ku Klux Klan

Pennsylvania

75. Beaver Falls: Ku Klos Knights of the Ku Klux Klan

76. Oil City: Ku Klos Knights of the Ku Klux Klan

77. Friedens: Loyal White Knights of the Ku Klux Klan

78. Girardville: East Coast Knights Of The True Invisible Empire

South Carolina

79. Spartanburg: United Northern and Southern Knights of the Ku Klux Klan

80. Abbeville: New Empire Knights of the Ku Klux Klan

Tennessee

81. Woodbury: Fraternal White Knights of the Ku Klux Klan

82. Nashville: Knight Riders Knights of the Ku Klux Klan

83. Shady Valley: Knight Riders Knights of the Ku Klux Klan

84. Memphis: Ku Klos Knights of the Ku Klux Klan

85. Johnson City: Ku Klos Knights of the Ku Klux Klan

Texas

89. Pasadena: White Camelia Knights of the Ku Klux Klan

90. Cleveland: White Camelia Knights of the Ku Klux Klan

91. Dallas: Knight Riders Knights of the Ku Klux Klan

92. New Braunfels: United White Knights of the Ku Klux Klan

93. Beaumont: United White Knights of the Ku Klux Klan

94. Abilene: United White Knights of the Ku Klux Klan

95. Omaha: United White Knights of the Ku Klux Klan

96. Houston: Traditionalist American Knights of the Ku Klux Klan

97. Bryan: Traditionalist American Knights of the Ku Klux Klan

98. Waco: Traditionalist American Knights of the Ku Klux Klan

99. Lone Oak: Traditionalist American Knights of the Ku Klux Klan

100. Greensville: Traditionalist American Knights of the Ku Klux Klan

101. Mt. Pleasant: Traditionalist American Knights of the Ku Klux Klan

102. Gatesville: Ku Klos Knights of the Ku Klux Klan

103. Livingston: Lone Wolf Brigade Knights of the Ku Klux Klan

104. Longview: New Empire Knights of the Ku Klux Klan

105. Dallas: New Empire Knights of the Ku Klux Klan

106. Dekalb: Crusader Knights of the Ku Klux Klan

Virginia

107. Abingdon: Knight Riders Knights of the Ku Klux Klan

108. Portsmouth: Loyal White Knights of the Ku Klux Klan

109. Staunton: Loyal White Knights of the Ku Klux Klan

West Virginia

110. Hurricane: New Empire Knights of the Ku Klux Klan