The Founders never intended that 'free speech' be used to protect those those use speech in incite panic or violence or other destructive behavior or facilitate/promote lawlessness. They never intended 'free speech' to be used to libel or slander or otherwise violate the rights of other citizens to have life, liberty and the pursuit of happiness, to target ICE agents or any other law enforcement or any individual or groups. They never intended 'free speech' to be the excuse to allow lewd, vulgar, obscene images/behavior wherever anyone wants to use that.
"Free speech" as written into the Constitution is intended to restrict the federal government from denying citizens the right to their beliefs and opinions without fear of retaliation from the government. It is not license to violate the rights of other citizens.
And it was not intended to restrict any community, organization, business, or any other public or private entity to set standards for what speech is acceptable. Thus we have strict limits on what speech is allowable in commercial media and rating systems for movies, video games, etc. And certainly schools and universities can set strict rules for conduct/speech and should to command respect and decent treatment for all--liberal/conservative/Christians/Jews/Muslims, everybody.