Zero Tolerance In Schools

"critics contend that it unfairly targets black kids and drives them into gangs." I am sorry but are these critics saying that black kids have a propensity for:

# Physical assault
# Threats of serious physical injury
# Extortion
# Sexual harassment
# Racial harassment
# Distribution of hate material
# Hate motivated violence
# Inappropriate use of electronic communications/media
# Possession or misuse of any harmful substances
# Fighting
# Bullying, intimidating, threatening
# Possession of an explosive substance
# Persistent truancy
# Persistent opposition to authority
# Habitual neglect of duty
# Willful destruction of school property; vandalism causing damage to school or Board property or property located on school or Board premises
# Use of profane or improper language
# Conduct injurious to the moral tone of the school or to the physical or mental well-being of others
# Use of tobacco
# Theft
# Aid/incite harmful behaviour

I'm sorry but show me the proof.