Ok, there was clearly no sense in these people. Didn't they know who Iron Man was? Plain gun shots were not going to do a thing to that armor. He understood why someone might be armed in the state this city was in, but these people could seriously hurt someone here if they kept shooting every stranger all willy nilly. Plus they knew the two of them were alive and fired on them anyway. That meant the jerks weren't exactly innocents here.
See, this is why Peter hated guns. Every time you turn around it was always that stuipid shoot first, ask questions later mentality. Well, not this time. Not on Spider-Man's watch. Spidey zipped around the corner right on Tony's heels. As soon as the first gunshot hit Tony's armor, Spider-Man leaped up on a web line and landed right in the middle of the throng of people. "Come on guys. That's no way to treat a guest." Immediately he webbed one gun arm down and used his super strength and speed to yank another right out of the second gunslinger's arms. "You're going to kill somebody behaving like that."
Once Peter was fairly certain the three were disarmed, He leaped back against the wall and wallcrawled into a flexible angle. If they wanted a fight here, well then they had one. He was tired of playing around. The team already had one Avenger down, they didn't need another. "We're here to help. Not get shot at."