No, there is not a need for hostility towards the police. That you think so is telling.
Whatever you think is "telling" is not relevant. I could say the same thing about you, so let's leave that part out.
Speaking of double standards, apparently the police are being held to a different standard. Or aren’t they innocent until proven guilty like everyone else?
They're not like everyone else. Cops are routinely protected by qualified immunity, which gives them special treatment in the courts which they should not have.
Besides, when they're on duty, they're representatives of the State, and the onus is on the State to prove that they're justified in what they're doing to citizens.
The cops in this case weren't even charged with anything. There's a bigger problem with a lack of transparency. They sat on this for two months, and if it wasn't for the fact that a local news outlet got wind of it, it never would have to come to light at all.
Doesn't that bother you in the slightest?