Police in US use excessive force unnecessarily all the time but they always deny it.
They are licensed and armed bullies.
Laws are on their side.
Bad laws.
Where the fxxx are the lawmakers?
Come to think about it.
Being harsh is part of American culture.
Look at what they did to native Americans, or
to blacks kidnapped from another continent, shipped back to America in cages and turned into slaves, or
to the hippies in 60s and 70s, or to
anyone who they don't like, particularly "negros" and "wetbacks"...
On the other hand, police in most countries are licensed bullies or even licensed gangsters who resort to extortions, intimidations, tortures, taking bribes, and can be bought by money to carry out threats or even much worse things.
But just because others are behaving similarly or even worse, it doesn't justify anyone else doing ANYTHING that is against justice and humanity no matter what the god damn bad law says.