Well, jokes about any particular race or ethnicity can be seen as offensive and cause harm. While some may argue that certain jokes are harmless, it's important to remember that humor can often perpetuate stereotypes and scrutiny of a particular group. It's important for us to be aware of the impact that such jokes can have on people belonging to these particular groups. And of course, freedom of speech should also be protected while also being mindful of other people's feelings.
In regards to your discussion around Jewish Supremacy - regardless of one's opinions on this subject, it is always important for us all to remember that we share more commonalities than differences even if there are disagreements between different groups in society.