The commies killed some Jews but the commies were Jews. They were the brains behind the movement. It is all historical facts.
So, many Jews in Europe during the 19th century lived in extreme poverty as well as being part of an oppressed marginalized minority within Europe. No surprise that so many Jews across Europe viewed nationalist ideologies which were constantly looking for excuses to start wars and expand their military forces as an existential threat, and believed their best interests would be served by being at the vanguard of a working class uprising that was gathering steam from the 1840's through to the outbreak of WWI.
Today, among topics never discussed in MSM and especially rightwing circles is that Israel today is one of the most economically unequal nations in the world, with extreme wealth and extreme poverty, and many Jews leave Israel because they find real estate prices unaffordable and are left with the lone option of moving in to occupied territories after the IDF forces Palestinians out of their homes. Many, who find that option intolerable and unsettling leave for the US, England or other destinations, so over the years, immigration into Israel is never far ahead of the exodus. Over time, the liberal democratic Jewish state becomes a mythical product, as secular Jews are replaced with Orthodox zealots. And this is why younger Jews in America aren't so dazzled by the modern state of Israel and hate the modern day conflation of Israel being equivalent to Jewish identity, which Trump exemplified a week ago, but nevertheless, a view held and reinforced by almost every other Republican and Democrat in US political office!