So, what would their views be if a group of thousands from Gaza decided to illegally cross into Israel - to seek political asylum? Clearly Israel has a right, AND an absolute necessity to protect its borders. So does the US. Trump isn't assaulting anyone, and the vast majority of hatred in this country has its genesis in inappropriately named 'progressives'.
This group of radical leftist Jews would probably be saying the same thing -- advocating giving the poor oppressed Palestinian refugees asylum. Their animosity toward both America AND Israel is identical to that of non-Jewish radical leftists.