Adding onto this, he knew the easiest way to get their nearly unconditional support was by making them afraid that minorities were gonna take away their position of “superiority” that they (white straight cis men etc) have always had in the US
Trump knew the easiest path to power was to develop a cult of personality that relies on undying loyalty from the uneducated. To support Trump is to support a despotic leader whose only goal in power is to achieve more power