Well the clear implication is that the class of "criminal" has been expanded. It used to be that you had to be convicted of a crime by a jury to be a criminal, now it's just anybody that Trump dislikes. Execution without investigation has been normalized and accepted, and that's exactly the intent.
Trump fears the people, but if it were slightly more popular there would be even more people hired by ICE and we would be seeing the consitutional abuses that happen today in Minnesota in far more places across the country.