It is very worrying to see the police enforcing their broad powers in such a heavy-handed and punitive way to clamp down on free speech and expression. The government is making it increasingly difficult for people to stand up for their beliefs. Protest is not a gift from the state - it is a fundamental right.
Even the leader of the opposition has made clear that a period of national mourning is not the right time to raise grievances against the royal family. The right to protest is protected in the UK and acts as a keystone of its democracy, but some of the heckling and protests that have gone on have only caused disruption, not contributed to pluralism.