Earlier quoted context omitted.
You have conflated two arguments: 1. That it's harmful 2. That it's easy to do something else (1) is the important point, (2) is irrelevant. On the important point, you seem to have assumed several things: a) that it is harmful b) that anyone to whom the assumed harm would occur would see it c) that they would know what the camp looked like (a) I see no evidence for this, in fact, research suggests the opposite[1] >…
Wow, it's really important to you to have a picture of a concentration camp guard tower up.
More important than that to me is the use of rational, sound, valid reasoning, and the avoidance of petty and facile straw man arguments.
But okay, I really want there to be a picture of a concentration camp guard tower, because the best way to deal with childishness and unreasonableness is, unsurprisingly, childishness and unreasonableness.