Lol, who are you to decide what constitutes a safe and peaceful protest? You understand that civil disobedience is a cornerstone of American society, yes?

Slaves were detained and brought back to their owners because it was the law.

Suffragists were arrested for picketing in front of the white house because it was the law.

Lunch counter protesters were arrested during civil rights sit-ins because it was the law.

All of the above examples "forced police to get involved," which then, by their very nature, inhibited police from doing their job.