If you agree that Trayvon was the result of the low-end African-American thug culture, you are by liberal definition, a racist. Trayvon's culture is to be celebrated, not demeaned.
All cultures must be equal in validity, including the Thugee Sect, Ghetto Gangsters, etc. Rap just as good as Mozart. Fathering multiple illegitimate children by different mothers (and not supporting them) just as good as nuclear families. Welfare just as good as work. Islam just as good for the US and Europe as Western Christian Culture ... maybe better.
Disagree? Well then, you are a racist. Hegemonic, Patriarchal, Gender Normative, Imperialistic, Capitalistic, Eurocentric, etc. Deal wit it.