Sadiq Khan: I won't be Donald Trump's Muslim 'exception'

Sadiq Khan: I won't be Donald Trump's Muslim 'exception' - BBC News

"My concern is, he's playing into the hands of extremists  who say it's not compatible to be western and to be mainstream Muslim. i think London showed last Thursday it is."
What do you make of Donald Trump?
"Donald Trump may well be the Republican candidate. You wan't be surprised that I will be backing the Democratic candidate, Hillary Clinton. I hope she trounces him."
play into the hand of O (v) to do exactly what an enemy, opponent, wants so that they gain the advantage in a particular situations
trounce(v) to defeat sb completely
compatible(a) able to have a harmonious relationship