An intelligence bulletin issued by the Department of Homeland Security and the FBI, and obtained by CNN, shows that law enforcement officials are concerned about the possibility of acts of violence carried out by anarchists at both the Republican and Democratic Party conventions to be held in Tampa, FL and Charlotte, NC.

Citing the history of earlier efforts by various groups to disrupt the party conventions, CNN quotes the intelligence bulletin: “During past national and international political and economic events, anarchist extremists have blocked streets, intersections, and bridges to disrupt or impede local business operations and public transportation access and, in some instances have initiated violent confrontations with police. FBI and DHS assess with high confidence anarchist extremists will target similar infrastructure in Tampa and Charlotte, with potentially significant impacts on public safety and transportation."