No, it would be poor marketing.
Trump wasn’t running anything during the election, so I’ll assume you meant people going door to door saying that if elected Trump will run death camps.
The ICE detention camps aren’t gassing the detained. There’s a pretty high mortality rate, due to mistreatment, but they aren’t actively killing people. But you know, Hitler’s concentration camps didn’t gas the detained at first, either. Are we on that path? Yes, i believe we are. There are lots of exits from that path, and i think there’s a decent chance we’ll take one. But i also think there’s a nontrivial chance we won’t.
That being said, on Saturday i went to a protest, and a guy handed me a sign with two sides. One side said something about detention camps with little swastikas replacing the "E"s. I choose to hold it showing the other side. Because despite my beliefs, i still judge that’s not the persuasive thing to say. And indeed, when i gave the sign back to the guy who brought it, he held it the other way (showing the swastikas), and one passerby pointed at the sign and said, “that’s offensive”.
After he left, the protesters (there were only 5 of us, in front of a bank that is courting business with ICE) chatted about the interaction. And i mentioned that i had chosen to hold the sign the other way, because I’m more interested in persuasion than in expressing outrage. The guy who brought the sign is more interested in spurring to action those who agree with him, so he’s going for outage.
But: it’s basically a marketing choice.
If you want to say that you pit anti-Trump marketing that’s based on extrapolation, rather than based on what he’s already done, go for it. I think that thesis would have generated a very different discussion, and a more productive one.