Pitbulls For Sale Why Do Pitbulls Are Not Used By Segurity Forces/police ,is That They Are Difficult To Train ?

Why do pitbulls are not used by segurity forces/police ,is that they are difficult to train ? - pitbulls for sale

I always see that the use of other dogs, black ministers or Doberman, but I've never trained pit bulls, in addition, if I in the dog kennel on the Internet, which are for sale to see developed, not pittbull racing is something that this happens with this race or the race is confirmirms deal with a violent and hard to find?