Two problems, one on both sides.
1. Yes, banks have to ask questions. They have to gauge a person's responses and behaviors, especially for that large of sums. Don't blame them, blame the Patriot Act. However, calling the cops is why this guy is going to win money. Banks don't call cops for fraudulent checks, at least they aren't supposed to. They have cameras and documented processes to follow in situations in which they think someone is being fraudulent. They are supposed to just refuse to cash the check and then move on, unless the person gets unruly and then they are able to call the cops.
2. And then we have this gem that proves this is article is just to fit an agenda (or the man was just trying to make himself more of a victim so he could have a case):
"Thomas said his mind quickly went to the large number of black people killed during encounters with police,"
This is what irks me about the whole "racist cops" situation. Up until a couple years ago, there were NO metrics of race when it came to physical altercations with cops. And even today it is lacking. There are no numbers to prove more black people are involved in cop shootings than white. There are no trending metrics that can be used. Go ahead, try. Look into the FBI's numbers. They never tracked this before and still aren't doing a good job of it. What we DO have are news articles. That's it. Yet they've already proven that black people get more headlines than white people for no reason when it comes to altercations with cops, and white people in negative altercations are not reported at nearly the rate of black people. So there is bias going both ways. But in the end, the reality is nobody knows if "large numbers of black people are killed during encounters with police" and whether or not it follows racial lines. In fact, the mortality rate among ALL altercations with cops is a very tiny percent. Still sucks, sure...but the issue is nowhere close to being a national emergency that the news can report as reasoning to believe that a black person is in mortal danger when approached by cops.