I don't think we have avoided talking about it, we have talked about it since the rise of civilization. We all want them to think and be like us, whatever that is.
I don't think anybody is expecting any culture to match "ours". Personally, I don't even see it as "us" and "them".
In a large civilized society there has to be some balance. Yes, you must accept others' culture. But, there is also an expectation that your culture should not negatively infringe on those around you.
And therein lies the problem. The issue here, both with inner city school problems and these random acts of violence, is "thug culture"
Thug culture is absolutely nothing but a drain on our society.
It brings no rich history, no value, and nothing good to anyone except the people who worship the violence, the drug dealing, and the abuse of our social systems.
When your kids walk around with a hoodie on pulled over their face, listening to violent and drug deal promoting rap music, they are promoting thug culture.
We need to put a stop to this. It should be shameful to deal drugs, to drop out of school, to steal things and assault innocent people....
But instead a certain subsect actually worships this behaviour.
Honestly, I think something that will help quite a bit is more of society is arming themselves. It's being shown, particularly in the USA, that we won't put up with this shit. You very rarely hear about these stories in states which have strong self defense laws. Crime rates have gone down since the 90's while CCW rates have skyrocketed.
I look forward to the day where thugs walk down the street knowing that most of the innocent people around them are armed.
That day is coming ever closer, with people realizing that a gun is merely a hunk of metal and nothing to be afraid of unless you're a criminal.