Trump is following the same methodology that Americans were warned about by the US Army in the late 1940's. The same one that successfully propelled multiple authoritarian regimes to power and kept them there in the last 100 years.
For those who say it can't happen here, it can happen anywhere. We're all human, and follow the same basic behaviours. It's happening as we watch, and as we bicker amongst ourselves.
"Don't be a sucker" - an excellent and clear analysis and exposé of the mechanisms used.