Au contraire. If he's in riot gear, how's someone going to hurt him? As a result they're far less likely to use force if someone attacks them. If someone smashes into you full speed, it's an attack. Smash into a line of riot police shields and it's just a bump, not deserving of retaliation to stop further attacks. You might get a few batons, but that's just because they can't let their line be broken.
Most police shootings in riots in my country occurs when policemen in regular gear are backed into a corner by rioters. If they use their batons they get swarmed and will end up hurt, so they have to shoot, or at least draw their weapon as a warning, fire a warning shot and whatever else the (quite rigid) instructions demand. The riot police can form a solid line and can easily slug it out with a bunch of rioters without any real risk to the policemen.