So Q and the Secret Service
It actually makes a 'lot' of sense that the SS would not take kindly to Q.
Put even a little thought into it and you'll probably realize a few things. First, you'll remember that <10 'know'. Some of them may be believers, some of them may be 'wtf'ers. But all of them should view Q as a potential threat. (as they should 'any' movement that has this much support). Too easy to put on a Q shirt or hold a Q sign and be seen as 'one of the group' - until which time bad motives meet opportunity. Additionally, it is their JOB to see everything as a threat - and respond accordingly. Finally, there 'are' even some SS who are certainly not Trump supporters - they just happen to be far more professional than, say, the FBI.
So I can't really see it as anything but the SS operatives doing their job, when they confiscate a Q sign or demand an apparel change.