Hi, welcome to GTA Wiki. Thanks for contributing to the File:Grove Street Families members.jpg page, and for taking interest in the wiki. Please leave a message on my talk page if I can help with anything, or as alternatives, leave a post on a forum, or refer to the Help pages. -- The Tom (Talk) 14:12, August 6, 2011
Just take a look at your images (which were deleted, of course). Each one of them was already on the Wiki; you just uploaded the same images! (Not to mention you didn't follow our image policy).
Plus, There is no need of putting the images of rare vehicles on the pages of the mission in which they can be obtained; those images have already place in their respective pages.
Apart from that, I am an admin here, my job is to clean up messes caused by other editors (don't worry, the only mess you did was the the duplicated images) and keep the wiki and its content in good shape.