As a real estate appraiser, there were areas that I had to go into, that I absolutely wouldn’t go after lunch, would always go armed, and, in some cases, would call the police to meet me at the home and clear it before entering. Then they would wait outside while I did my job, not leaving until I did. And invariably there would be some old woman trying to just get by, living next door to a drug house. Sad situations.
There was a TV show back in the 1970s that some might remember called "Welcome Back Kotter". That was exactly like the inner city school I attended, only the "sweathogs" were not the lovable misfits as portrayed in the show. The real sweathogs would beat you senseless for your lunch money and cold-cock you in the hallways for no reason at all.
Fortunately I was blessed with a love of reading from an early age. Therefore, I did most of my "book-learning" on my own initiative, joined the military and was able to escape that urban jungle.
The standards for the high school I attended were so low that I cut class nearly half the time and was still able to show up and pass the exams. I didn't get A's but did get strong C's and a few B's. I don't think anybody flunked out of that high school, not even the delinquents. Typical "graduate" of that high school would maybe be at a sixth grade level in a more affluent suburban public school system.
Liberal ideology basically leaves these kids with minimum options to escape from their environment. Almost all of them are doomed to a lifetime of barely scraping by and often needing public assistance, be it welfare or the prison system.
Liberals simply don't care about improving the situation as they know that if these kids became successful, they might become more conservative. So they keep them down and they keep them dependent. They would rather have them shooting each other in the streets of Chicago than moving on up to Naperville (one of the affluent "red" areas of metro Chicago).