Justin Bieber Defends Himself on Twitter, Says He's "Not a Bad Guy"

(When he's good...)

(He's very, very good! Justin gives it everything he's got on stage.)

(Giving Back: Justin takes time out of his busy schedule to visit the Children's National Medical Center in Washington, DC.)

(Instead of just quickly signing autographs, Justin has conversations with his fans!)

(Justin was photographed bringing his baby brother, Jaxon, to an event. Jaxon is so adorbs!)

(Sweet son: Justin gives his mom Pattie a kiss on the cheek at the AMAs in 2012.)

(Post-game show: Is this the witching hour when Justin goes a bit wild?)

(Does Justin have too much time (and $$) on his hands?)

(In May, Jelena were walking back to his car in a Calabasas, Calif., parking lot when a fight broke out between JB & a paparazzo.)

(Justin's cars seem to have gotten him into a lot of trouble lately.)

(Justin instagrammed this picture on NYE, which was the same night he posted (and quickly deleted) a pic of Grey Goose vodka.)

(A few days later, photos leaked to TMZ of Justin allegedly smoking pot. So far there's no comment from JB's camp...)

(Justin Bieber arrives at his London hotel at 6:30am after a long night of celebrating his 19th birthday... without a shirt? What's going on Justin?)

(Is Justin's not-so-good choices reflecting on his style choices too? Looks like it.) 

(Justin recently upset a lot of fans when he showed up 2 hours late to his own concert. What do you guys think the hold up was?)