https://www.dailykos.com/stories/2017/7/7/1678603/-Trump-s-visit-to-Poland-staged-to-boost-radical-nationalists
"So while Poland has long been a frequent stop for America presidents abroad, there is one big difference between those previous visits and that of Donald Trump. President Donald Trump is … the first sitting American president in decades to visit Warsaw while forgoing a stop at the city’s monument to the Jewish Ghetto Uprising. Why skip this stop? Because Trump’s bused-in crowd of nationalist supporters aren’t just anti-immigrant, they’re anti-Semitic."
