Go read patio11's AML article again. He gives examples. And says he has personally experienced it.

More importantly he explains why it happens. And expresses a wish for more scrutiny on how AML works in practice, because the common result has some bad effects.

Here is his explanation. Having regulators crack down on you is bad for business. Which they will do if money laundering is found. And money launderers actively want to bounce money between different organizations in different legal jurisdictions. Therefore if someone wants to send money to a different country, particularly if they look like they might be hard to find if regulators decide to ask hard questions, they get arbitrarily increased scrutiny. The result of which is indistinguishable from xenophobia. (Which may also be involved.)