Woodrow Wilson (internment camps)
FDR (internment camps, destroying food during the Great Depression)
J Edgar Hoover, Eisenhower, JFK, RFK, LBJ, etc (COINTELPRO)
GHWB (Ruby Ridge)
Bill Clinton (Waco, Elian Gonzalez, clipper chip)
GWB (PATRIOT Act, Total Information Awareness)
Obama (droning American citizens)
How young and/or sheltered are you that you never suspected anyone of doing it while it's been happening and making the news for decades? This is just a quick list off the top of my head. We can get into the whole NSA/Snowden thing, the Utah data center, wiretapping everyone, ECHELON, Five Eyes, ALPRs, etc, all of which made headlines on Slashdot itself (and with a 6 digit UID, I assume you've been here for it).
If you think this is unique to Trump and he's the only one acting like a dictator, your political bias is showing.