A few members of a community board in Manhattan do not want to give permission for a Sukka in a park (because of 1st amendment issues).
According to the Shulchan Aruch Harav, one cannot make a blessing in a stolen Sukkah. So if the board would end up forbidding the Sukka (and win on appeal), yet someone were to put one up, would one be able to make a blessing in that Sukka?
What if the shul wouldn't have asked, and the police wouldn't have noticed, then would the Sukkah still stay kosher?
Relevent question: Sukkah in the Soviet Union