As a European which don't follow the subject of US police, my TV habits are not crime dramas, I just have to ask:

WTF are police going to do with grenade launchers?! (Do they have 155 mm artillery too? :-) )

Are those for tear gas? I just don't believe even US gangs are doing Taliban style insurrections or Intifadas?

(Being Swedish with our really open borders for refugees from the Middle East, I should just wait a few years and find out why police need heavy weaponry? :-) :-( )

Edit: Other commenters seem to say (a) These really aren't needed by police, (b) there are lots of surplus weapons from Iraq/Afghanistan. Why aren't those extra weapons just sold/donated to countries which need them? Like most neighbors of Russia, they ought to be starting with big defense investments right now (except for the complete crazies, see Swedish politicians.)