https://www.techdirt.com/articles/20211015/12084647755/court-says-city-baltimores-hecklers-veto-anti-catholic-rally-violates-first-amendment.shtml

One of the more common violations of the First Amendment is viewpoint discrimination. When entities run into speech they don't like, they often steamroll Constitutional rights in their hurry to shut this speech down.

The government is allowed some time and place restrictions on speech, but it is very limited in its options. To expand these options, government entities will often say things about "public safety" to justify their incursion on people's rights. These justifications rarely justify the overreach.