First of all, the term “ever growing” is a complete fallacy. The “progressive wing” is at the fringes, same as, I’m sure you will argue that the far right wing is at the fringes of the Republican Party.
Second, let’s not conflate the support for the Palestinian people and a two state solution with “antisemitism”.
Third, the campus protests which you are no doubt referring to, are not comprised of Democratic “progressives”- there is no evidence that the protestors support either political party. That is patently unlike what we saw on Jan 6th where the enemy combatants were carrying the flag of their party’s unquestioned “leader.”
Fourth, just as you accuse liberals of doing to Republicans, you are allowing the actions of the most extreme fringe voices to define your perception of the Democratic Party in its entirety. And as stated above, there is no proof these fringe voices even identify as democrats.