A Man Is Known by the Company He Keeps
(a person is believed to be like the people with whom he or she spends time)
Come here, Glenn. As your friend, I've got to tell you that people are starting to wonder why you're having around with all those anti-goverment demonstrators.
Look. We've been friends ever since our college days. I'm not doing anything wrong.
Maybe not, but since you work for a government agency, you've got to be more careful about who you associate with. A man is known by the company he keeps.
Guilty by association. Is that it?
Unfortunately, yes. People often believe that a person is like his friends.
Boy, what a hassle! Now what do I do?
If I were you, I'd cool it with those pals of yours for a while.
what a hassle! = まったく大げさな