it depends where the pictures are taken.
If its in public then they have no say. However, if you put silly titles like "**** eating hot dog" for a photo of some bloke eating a hot dog then they could potentionally cause issues.
That's cruel and unthoughtful.
That's cruel and unthoughtful.
This guy's work might be worth a look;
http://cargocollective.com/maciejdakowicz
As has been stated, taking pics in public spaces outside is fine. If you want to take pictures in the club you do need the club owners permission.
EDIT: Bare in mind even though what you're doing is legal it might well provoke a bad reaction from some of your subjects.