Silverman did not say it was a swaztika. She asked if it was an ATTEMPT at one. Doesn't make her a moron.
Maybe we can give her a little leeway here. She is of a group of people who have been subject to periodic attempts throughout history to literally exterminate them (i.e., Spanish Inquisition, Nazi Germany), so maybe she is a little more sensitive to such things than the general populace. Simply because they were Jews, men, women and children were the subject of grotesque Nazi medical experiments, they were burned in huge gas ovens, and their skin was used for lampshades. Unfortunately, the hate still persists. In 2015, there were more hate crimes in the United States against Jews than any other group (53.3% of religiously motivated hate crimes were aimed at Jews). I'm guessing it's a palpable fear she has.
On another topic, I just had an interesting conversation with a former Israeli soldier. He is a huge supporter of Trump.