In order to be upset with the United Nations, you need to have expectations. Anybody who expects anything productive from the sick scumbags at the laughingstock United Nations hasn't been paying attention for the past 40 years.
I always cut actors and musicians some slack because they're totally surrounded by liberal simps as soon as they start making real money. Dave Mustaine, though, has been consistent with his message of questioning our politicians and "political correctness" in general. If I recall he's been through many tragedies that would crush most folks yet he snaps back stronger than ever.
In short - let's not trample the good guys who dare to speak up just because they're not immediately acceptable.