You don't think Christ would forgive anti-semitism?
No. Not if the anti-semite continued to harbor his Jew hatred.
At the end of his life,continuing into the hereafter,none of us know with certainty who He forgave.
We do know He asked God to forgive the crowd who called for His death (Father,forgive them,they know not what they do.) and the "good thief".
However,one could argue that while He lived,He lectured and chastised those Semites,who claimed to be Jews,but were not,in other words,the scribes and Pharisees. I believe many of them were impostors. Whey were men that said one thing but neither believed what they said nor acted on what they said.
They took advantage of people,they were the hypocrites,"whited sepulchers",liars,and they used the temple to buy and sell and Jesus spent much time and used many words to warn them and others that their actions and deeds were not to be imitated.
I would also argue that based on what I wrote,I doubt that Mel is an antisemitic. I think he may have been railing about men who claim to be Jews but aren't. They claim the name and use it as a cover to avoid having to answer for their own crimes and duplicitous activities as they go on their merry way,doing as they please rather than follow Torah.