So he played dumb and acted like he didn’t know what she meant. How does this answer the question? Why pretend he did when he didn’t?
It boils down to this.
Khan is the Mayor of London. He is responsible for policing in London. Therefore he should be subject to scrutiny over his handling of policing in London. This is true regardless of his race.
He was asked a question about how many grooming rape gangs there are in London. He refused to answer the question (and he didn’t, despite false claims he did) because he thought Susan Hall’s question was motivated by racism. He thought it more important to keep her in her place and not play up to any “racist dog whistles” than address the issue at hand.
This raises a serious question: if Khan is willing to play politics on such a simple question, does that mean he has also played politics on anything that has come across his desk? Are there reports he’s seen that he hasn’t publicly commented on because he doesn’t want to play up to “racist dog whistles”? Are there reports that indicate the police have acted in a certain way to avoid being accused of playing up to “racist dog whistles”?
It is inconceivable there aren’t grooming rape gangs in London. So either Khan knows about it but won’t say because the politics are more important to him, or he doesn’t know which indicates he has no grasp on the seriousness of the issue in the jurisdiction he is responsible for. So of course an investigation is the only way to determine this. Khan should welcome an investigation if he has nothing to hide.
Providing the safety of women and girls is a priority of course. An investigation isn’t warranted if you don’t care.