Add in Rottweillers and that's 73 percent of human deaths.
Ban 'em! They're dangerous. And at the 76th most common dog breed, pitbulls, aka, thug dog, should not be defended. Those who do probably, as Roissy writes, likely defend open borders, rap music, and non-racial stop and frisking.
The German Shepherd does deserve defense, as it's the second most common breed and does much less mayhem and death.
HT: the Audacious Epigone