Comment by majorchord

> In the United States, the right to petition is enumerated in the First Amendment to the United States Constitution, which specifically prohibits Congress from abridging "the right of the people peaceably to assemble, and to petition the Government for a redress of grievances".

I think the key point is that it allows this "petitioning" of the government in the first place, that's what it's good for. But you still have to go through the court system to right any wrongs, which includes misbehaving police who may be breaking the law themselves.

The Constitution is not a judge, jury or executioner, so in a way it was always "limited" in what it can do if it's not actually respected.