WASHINGTON — President Trump’s personal lawyer on Wednesday forwarded an email to conservative journalists, government officials and friends that echoed secessionist Civil War propaganda and declared that the group Black Lives Matter “has been totally infiltrated by terrorist groups.”

The email forwarded by John Dowd, who is leading the president’s legal team, painted the Confederate general Robert E. Lee in glowing terms and equated the South’s rebellion to that of the American Revolution against England. Its subject line — “The Information that Validates President Trump on Charlottesville” — was a reference to comments Mr. Trump made earlier this week in the aftermath of protests in the Virginia college town.

“You cannot be against General Lee and be for General Washington,” the email reads, “there literally is no difference between the two men.”

The contents of the email are at the heart of a roiling controversy over race and history that turned deadly last weekend in Charlottesville, where white nationalist groups clashed with protesters over the planned removal of a statue of Lee. An Ohio man with ties to white nationalist groups drove his car through a crowd, killing one woman and injuring many others, authorities say.