A protest is not even getting involved politically though. Not really. I read "more people getting involved politically" and I think going to city council meetings, running for office, etc.. And I think: good but serious time commitment to actually be involved that way (and probably as motivated by Sanders as it is by Trump at this point - it's kind of central to the message people took from the Sanders campaign if any). So being a serious time commitment clearly difficult for many. In many ways protests are less being involved than voting is probably (but does depend on how much one's vote even matters in any given election).
I'm not saying to only care about local politics or something, just protests are not bad, but for the most part seem to be pretty seriously ineffective.
But the people who have never been to a protest in their lives. Well, I'm not sure I'd wear that as any sort of badge of pride (except if they are young, then they are just inexperienced). But otherwise haven't they even wanted anything to change before now, ever been outraged by any U.S. policies until now when there is so much that is wrong and continues to be wrong to a lesser or greater degree (it does vary depending on who is running things), no matter who is in charge? And they have never wanted to try that mode of engagement before? I've been to protests before etc.. Don't think they are all that effective by themselves though.