Who is this "we"? I don't hate cops and don't know anyone who does.
I know a lot of law enforcement officers and they don't wake up in the morning looking for trouble.
Assholes like this citizen are the problem. He was looking to agitate the police and you never get to see whatever happened before he started recording.
Are there bad cops? sure. With well over a million police officers in America some will be bad.
I would bet any amount of money that the percentage of cops that are bad is infinitesimal compared to other occupations.