Were they? We really don't know what Trevon would have done. Again. It was raining. Martin was walking slowly, looking at homes he passed. Yes, he may have just been a curious kid, but Zimmerman's job was to observe suspicious characters.
If I was walking back from a store in the rain, my focus would have been getting home. Are we saying that Martin didn't know to come in out of the rain?
It was raining. When you are walking in the rain, aren't you thinking of getting to you destination and not looking around? I don't think he was moving his head left to right checking out the decorations, the dwellings were exactly the same on each side...nothing to look at. He was merely returning from the store. He most likely was looking forward to getting to his destination.
If I was Martin and noticed someone following me, I would be alarmed. I would probably increase my speed and become very alarmed when the follower did the same, making sure he was following ME. I would be terrified. The fight or flight response within me would be initiated. Martin choice under severe fear was fight. But the fight wasn't fair. He was going to fight with fists, Zimmerman was going to fight with a .38 caliber. Zimmerman "won."