Again, you can't judge an entire Police force by the actions of a few. I will agree that the Sherman case was a huge fuck up though.
For the most part, the majority of TPS personnel I've dealt with have been good. Then again, I'm not some asshole criminal. I also know many officers and have seen first hand some of the shit they deal with on a day-to-day basis. Quite frankly, you couldn't pay me enough to do that kind of work. For example, rushing to a call for "man with a gun, shots fired." No thanks!