Proponents of Proposition 112 have canceled a rally scheduled Friday because of what they say are safety concerns.Organizer Megan Meyer said in addition to Greeley City councilwoman Stacy Suniga reporting a threat over her support for the ballot measure, Meyer said other advocates have also received what they consider threats.”It was going to be a family event, and now I just don’t want anyone to get hurt,” Meyer said. “I think tensions are just a little too high in Weld County right now.”Meyer said she has not received any threats but many harassing private messages on social media. She said she did not have documentation of the harassment because she blocked the users responsible. Meyer said if she is threatened, she will report it to police.Don Perl said he received an anonymous letter “just full of hatred” about 10 days ago and filed a police report.”It’s very poorly written,” Perl said.Although there doesn’t appear to be any threats made in the letter, it ends with “Say Perl, stay away from the squirrels.”Perl joked he might just be paranoid, but he has been avoiding squirrels.Greeley police spokesman Lt. Fred Meyer said the letter doesn’t contain any substantial threats and doesn’t rise to the level of violating any criminal statute.”Even when a recipient may feel harassed or threatened, we have to judge the statements according to Colorado statutes and municipal ordinances in determining whether a violation of criminal law has occurred,” he said. “In this case, while the language is reflective of the deep political divides some people are driven by, there is no crime that has been committed.”Lt. Fred Meyer said the department has not received any other reports of threats he is aware of, and the public has no reason to be concerned.If passed, the ballot measure will increase the distance between oil and gas wells and schools, homes and bodies of water. Proposition 112 would increase setbacks to 2,500 feet. Under current regulations they are set at 1,000 feet from schools and 500 feet from homes.The rally, previously scheduled for 5:30 p.m. along sidewalks at Lincoln Park, was planned in response to an anti-Proposition 112 rally hosted in September by Weld County mayors at the Weld County Courthouse.Megan Meyer said she is not planning to reschedule the rally anytime soon.