At CPAC, Trump appeared to compare all migrant asylum seekers to murderers. The term 'Angel Moms' refers to mothers who had children killed by undocumented immigrants.

via Aaron Rupar:

We're now in the blood libel portion of the speech -- Trump says the belief that undocumented immigrants "are better than the people we have" is "nonsense" and "false propaganda." "Just ask the Angel Moms how good are they," he says.