The Supreme Court Just Made It Easier for Police to Arrest You for Filming Them

The First Amendment makes it unconstitutional for government officials to retaliate against you because they dislike your speech. At the same time, federal law gives you the right to sue state officials for compensation if they violate constitutional rights such as your right to free speech. But on Tuesday, the Supreme Court invented a rule that will often allow police officers to arrest people in retaliation for disfavored speech without liability.

By enabling police officers to target viewpoints they dislike with near impunity, the decision could be catastrophic for protesters...