Do you really think life is that simple? Funny because I know of many Mexicans that do not work, will not work, and live on the welfare teat. I also know Blacks that are hard workers. I suppose it is possible these Blacks were attacking the Mexican because he works but they may have also attacked him because they lost their jobs to illegals- or simply because they wanted to. Stereotypes are funny things.
My own experiences have been that blacks have been more hostile, racist, and violent to ALL races compared to Latinos. This is based solely on my experiences living in Chicago, Miami, Queens, and Brooklyn.