What Trump says is not a new opinion. A kind of extreme political opinion like his should have been discussed among ordinary folks in a bar.
Similar phenomenon happened also in Japan.
Kazuya Maruyama, a senator of upper House, remarked "We can feel how dynamically United States changed by President Obama, who is a decendant of Black that has once been treated as slaves in those days."
A immature story like this may also be discussed somewhere in a bar.
But, politicians are not supposed to realize bar politics, which are not sophisticated policies.
Supporters of Trump must think about politics sincerely.