Cities and municipalities have an obligation to their communities to provide safe places for their youth to skate. It is an investment in their future. When children are looked after and cared for by adults they grow up into responsible, caring adults. As responsible adults we cannot turn our backs on these kids. But you may need to do a feasibility study.
Some cities require that the youth raise some or all of the funds for the park.
If your city has no funds and it has been your pattern to require the basketball or baseball players to raise the funds for their facilities then you may want to go that route. If however you have funded every other sport and now put your hands in your pockets, then I think you are being unfair and may be entering into some civil liberties issues. Don't you hate it when I bring that up. Your concerns would be that the park is affordable for the immediate neighborhood youth and you may have to work out something with the park to provide scholarships. You also need to be sure that the group is qualified to work with children.