Right Click won't work

I just redownloaded blender after not using it for a couple years (i was ok back then and still remember practically everything) but when right clicking to remove objects it doesn’t work. I also cannot drag to move. Has anything changed or is my computer just being dumb. Im on a mac if that helps.

Right clicking doesn’t remove, it selects. By the sound of it, it might be a display driver issule. Try changing Selection setting in User Preferences -> System to OpenGL Select.