Making cynical blanket statements about large groups of people doesn't do anything to address any kind of issue, and instead normalizes negative behaviors both within that group.

Within the group, the more people believe that it's the norm, the less social impetus there is to address individual bad actors.

Outside that group, people are less likely to treat people fairly if they are perceived to be part of a group of bad actors. How is someone making a positive difference supposed to navigate an environment where everyone assumes they are bad actors?

Finally, pointing to a single case of someone who was arrested for corruption among literal thousands of bureaucrats does not make a compelling case.