I may not know much about the Labour party, but Khan and all those other members do.
Khan says, "If somebody is saying views that are appalling, disgusting and clearly anti-Semitic, I've got to call it out."

Ask him who those "somebodies" are who are "clearly anti-semetic" and if they are do you want them in the membership?

you pounce on the slightest hint of misjudged remarks and blow them out of all proportion

No I did not. It was pounced on by other Labour members and became a national issue.

your "views" which are actually predigested Israeli regime propaganda.

This is not about israel, but on threads that are I have put Israel's side of the argument.
Why does that make you angry?
Why should not both sides be heard?