It reads in part...
Dear new residents of [redacted] Avenue C:
This neighborhood has existed and co-existed since long before you moved in.
It is a diverse neighborhood of people who are not tolerant of entitled, suburban, college frat behavior, and your disrespect and ignorance of your neighbors and the area you have chosen to live is obnoxious and disturbing — and it will not be tolerated.
THIS IS NOT YOUR FRAT HOUSE, A DORM, OR YOUR PARENTS BACKYARD IN CONNECTICUT. SHOW SOME RESPECT.
An occasional, respectful party is acceptable — storing kegs in the back and having obnoxious post-grads running rampant around the building with frat-letter flags on their head is not.