MS-13 is a brutal gang out of El Salvador but it is a near zero threat to the average American. It is clever and evil propaganda for Trump to focus so much time on them.
Hayek in Chapter 10, "Why the worst get on top" of The Road to Serfdom warned of the Trump type:
It is in connection with the deliberate effort of the skillful demagogue to weld together a closely coherent and homogeneous body of supporters that the 3rd and perhaps most important negative element of selection enters. It seems to be almost a lot of human nature that it is easier for people to agree on a negative program--the hatred of an enemy, on the envy of those better off-- than on any positive task. The contrast between the "we"in the "they," the common fight against those outside the group, seems to be an essential ingredient in any creed which will solidly knit together a group for common action. Is consequently always employed by those who seek not merely support of a policy but the unreserved allegiance of huge masses. From their point of view it has the great advantage of leaving them greater freedom of action than almost any positive program. The enemy whether he be internal like a "Jew" or the "ku;ak," or external seems to be an indispensable requisite in the armory of a totalitarian leader.Trump has chosen non-white immigrants as his enemy and will go to bizarre lengths to make them all appear evil.
What a dangerous propagandist and clown:
Today, we heard the experiences of law enforcement professionals and community leaders working to combat the threat of MS-13, and the reforms we need from Congress to defeat it. Watch here: https://t.co/VPMTnko7Ik pic.twitter.com/4OaXXuj9Va— Donald J. Trump (@realDonaldTrump) February 6, 2018