He probably means the people who riot, destroy cars, homes and businesses of average people.
Shooting them is wrong and this guy probably is a dickhead, yes, but a lot of normal, average citizens will agree to this.
Edit: To clarify, I mean that‘s how the right get‘s people on their side. Rioting will just result in more people agreeing with people like this guy, even if the message is absurd.
Safari on iOS supports extensions out of the box. You can just install adguard or something else and won‘t have any ads.
There are also third party browsers, which yes, use WebKit, but also can block ads.