Here is another well written article by the Washington Post about who is this candidate and what is his campaign agenda. It should make English speakers more calm, in no way is he the Socialist Hugo Chavez of Mexico. In many other countries of the world he would be identified as a Social Democrat.
https://www.washingtonpost.com/world/the_americas/if-he-becomes-president-this-man-will-turn-mexicos-white-house-into-a-public-park/2018/06/04/750e4d4a-169e-11e8-930c-45838ad0d77a_story.html?noredirect=on&utm_term=.d9be0244b0a7