My dad was an illegal (retired principal engineer for a division of catepillar now,) and in my younger years as a poor boy I spent a lot of time living in that community (mostly hispanic, but a surprising number of Africans as well.) Never seemed overwhelmingly violent to me, living there, though of course there were gangs. For the most part they just seemed like people who wanted to come here to work and live quiet lives. Hard to be angry at that.