Civil-rights attorneys are challenging a new set of state laws that establish a crime of “mob intimidation” and enhance penalties for riot-related violence and looting, arguing in a federal lawsuit that the measures unconstitutionally “seek to arrest the peaceful expression of free speech.”

The challenge was filed Wednesday, two days after Gov. Ron DeSantis signed the controversial package (HB 1), one of his top legislative priorities. The governor laid out a framework for the legislation in September in response to nationwide protests after the May 2020 death of George Floyd in Minneapolis.