Maybe they are hoping that more residents will start doing the jobs of city employees:
http://www.newhavenindependent.org/index.php/archives/entry/edgewood_park_cleaned_up_one_butt_at_a_time/

I agree that Wooster Square Park needs to be better maintained in general. The grass and bushes are unkempt and overrun with weeds year round. But it's absolutely true that it would look much less like a pigsty if neighbors were not so prone to dumping their bags of household garbage in trash cans that are put there to accommodate the small scraps of litter that passersby leave. It is shameful to see trash cans in a public park overflowing with bags of people's household crap, but this problem is not the city's fault (for a change!).

Wooster Square has been cleaned and should be all set for the event. If the garbage is still there please call 203-946-8004. Thank you.

Thanks for fixing this issue!