There are hippies....and then...there are HIPPIES. It is hardly a homogenous group.
There is the garden-variety hippy, who advocates peace, wears tie-dye and beads and raggedy jeans and headbands, and smokes weed ("Hey man! Pass that over!")
Then, there is the "I'm from BERKELEY", raving socialist anti-capitalist anti-American anti-military, narcissistic, self-righteous, arrogant west-coast hippy. You know the type. The kind that even normally peace-going, pacifistic Americans want to beat the hell out of.
Lastly, there is the ultra-radical, frightening, violent, murderous, Manson style hippy. Thankfully, they seem to be rarer than hen's teeth.