It would be insane if cops had hand-to-hand battles with suspects. Taking huge chances with lives that way. Cops have to take control of situations fast, otherwise things can and will get out of hand...and people die.
There are many stories like that on the Internet. One I remember was about a guy who poured brake cleaner in his crankcase and ran the engine on his Corvette or Camaro (can't remember which) and basically ruined the engine.