Why do jewish people stand by each other even when one of them is doing wrong?

As a non Jewish person, I was recently involved in a nasty legal issue with a local Jewish politician. We were very unfortunet to discover some illegal activity by this person which was investigated by a law firm and deemed to be illegal. As soon as my company proceeded with legal action against this corrupted person all hell broke loose in the community amongst all the other Jewish folks acting against us. We were treated horribly by these people. While we never held any prior views of the different religions on this planet but we are now starting to think that maybe there might be some truth to the views of some. The law firms that we hired told us in no uncertain terms that the Jews are a tight bunch. We ended up taking the hit in the end as it was my company that suffered the loss and the deemed crooked politician is still holding his post. Upon further investigation we found out that the crooked politicians father is a retired judge and his brother is a big shot local trial attorney. The city attorney who worked directly for this crooked politician worked a miracle to protect this bum also happened to be a Jewish person as was the city manager too. The evidence was previously made perfectly clear against this corrupted politician, deception, theft, fraud and slander. The politician went out of his way to ruin my company after we as a local business had bad dealings with a friend of his who tried to swindle us out of about 10K the prior year. We had to proceed with legal action against this friend of his as 10K is a lot of money to be defrauded out of and too big for my small business to absorb. We mitigated and he admitted to being wrong and we got our money back. That is when our problems with the local politician started, then everybody else, who also happened to be of Jewish decent. For a guy with no former religious views, this just seems to be too much. Any truth to the clubbyness? Or is this straight up reverse discrimination against a non Jew such as myself?