Why Do Legal Hispanic Immigrants Protest for Illegal Alien Rights?

In the recent protest marches we have seen legal Hispanic immigrants protest along side of illegal aliens. However if you talk with legal Hispanic Immigrants most are appalled that they had to come legally and others break the law and sneak over the border. That some illegal aliens join gangs, sell drugs and commit crimes. But why are some Hispanic Immigrants sticking up for illegal aliens? Well this subject came up in an online think tank and one member stated;