What other groups receive free rent from the city?
If there are any other such groups, I am opposed to such Welfare arrangements.
You have made this same incorrect statement at least four times in this thread. The rent is not free. The Scouts pay a legally recognized amount of $1.00/year -- in accordance with their agreement with with the City.
Therefore, your whole premise of "free land" is false and your argument collapses under it's own weight.