I can not imagine what he would do if he is threatened by imaginary enemies

It's pretty obvious he already does. His comments and actions toward Central American refugees is chock full of fears of "the other". He does use that kind of fear to manipulate his followers, but I get the feeling it is not 100% cynical: He really does fear MS-13 is going to infiltrate the US. (Despite the fact that MS-13 originated in the US!)
“Socialism never took root in America because the poor see themselves not as an exploited proletariat but as temporarily embarrassed millionaires.”

John Steinbeck