Donald Trump tells non-Christians to identify themselves during a rally, asks audience; 'Should we keep them?'

On Wednesday, the Republican nominee was in Iowa where he was receiving the endorsement of a Christian Conservative group.
During the speech he asked members of the group to raise their hands if they were Christian Conservatives, to which he received a big cheer from the audience.
Following that he asked those who were not members of the group to raise their hands.
āRaise your hand if youāre not a Christian conservative. I want to see this, right? Oh thereās a couple people, thatās all right.
"āI think weāll keep them, right? Should we keep them in the room, yes? I think so.ā
This sparked a bit of backlash from the online community with Trump being branded as "deplorable" for asking the question.
Donald Trump takes attendance like a classroom: "Raise your hand if you're not a Christian conservative" #whereyaat https://t.co/4sjWNDStbm
— Deena Zaru Pettiford š©š»āš» (@Deena_Zaru) September 29, 2016
I notice Trump did not raise his hand. Probably because he is not Christian and barely a conservative.
— Garic Goblinhewer (@HistoryDwarf) September 29, 2016