I was ok with the story until he said he was shot repeatedly with tasers and had his head "ground" into glass several times. Unless this is a complete abberation, I have never seen cops torture a suspect for an extensive period of time. I have 25 years of law enforcement experience, so I can speak from a place of having been there. Can you be tasered for refusal to cooperate and resisting during a lawful arrest?...yes. Can you be subject to physical restraint if non-compliant during a lawful arrest?...yes. Can you be subject to these things for merely refusing to answer a question...highly unlikely! Can you be subject to these things for failure to comply if the officer has probable cause to search your vehicle...probably!
My guess is that there is much more to this story than we see on the pastor's video...if it went down like he claims, then all officers involved should be disciplined up to and including criminal prosecution! If he forced the situation during a lawful encounter, then he made the choice to escalate the situation.
No one likes to interact with the police, but being uncooperative or aggressive is not the way to successfully exercise your civil rights...trust me, as a whole, cops are not out to "get you". They want to get on with their day just like you do...