IF he initiated a physical altercation with Zimmerman because he was offended at having been followed by Zimmerman, that would constitute doing something wrong, you dimwit.
If Trayvon did that, then the real question is "what did Zimmerman do wrong?"
I can answer the what did Zimmerman do wrong.
1) He followed someone suspicious and holstered a gun. You call the police if you witness someone doing something wrong...if the police had come...what would they have done based on the evidence GZ was giving them...Trayvon would have simply said he went to the store and was walking to his dads fiances house. No crime there.
2) When he was approached and asked what the problem was...GZ didnt man up and tell him...GZ was following him because he thought there was a problem, so when asked by that person, why not tell him what the problem is?
3) Instead, when asked, GZ reached for his "phone" and was hit while doing it. How did Trayvon know what he was grabbing for and as it turns out there was no phone there...it was a gun.
4) MR Z was following someone like they had already committed a crime...they always get away? What was trayvon getting away from...what had he done up to that point?
on the other hand...in hindsight...Trayvon could have asked in a less intimidating way and then explained where he was going...or he could have just continued to walk to the house instead of circling back around.