If you're just referencing the outlaw biker gangs, then yeah.Bikers for the most part are a bunch of scumbags. Maybe a few Harley riders...accountants that grow some stubble for the weekend ride, look fondly at his life, or what they think bikers represent. But law enforcement is tipping a few beers tonight at thought of one less dirtbag in the ground.
But motorcycle riders in general: no way. I rode a dual-sport for years but my love for speed and back roads was not a good combination. All the same, whether it's bikes, 4x4, boats or guns - there is the full spectrum of humanity in all those groups.