He’s already spoken out against anti semitism.
He's spoken out - repeatedly
But he's been unwilling to take action
Words are meaningless without deeds
Imagine if the police, post Stephen Lawrence and the charge of institutional racism, had been given guidelines from the leaders of the black community. Then imagine the police rejected these, instead a mostly white group of police officials, without consultation, drew up its own anti-racism guidelines. Imagine these officials then said to the black community 'here are the guidelines we're following', and when that community complained that these did not address their concerns, those police officials responded how dare you complain, you should be grateful.
Or if Labour unilaterally decided to rewrite a widely accepted set of guidelines on sexual harassment, in defiance of opposition from every women’s organisation and without consulting them, and delegating the task to a majority male sub-committee, and then expected women to applaud the new document.
How do you feel Corbyn has acted?