There has been much angst here from the Left about Trump building a wall, but Israel has built a wall which has been successful in keeping unwanted people out, and good for them:
http://www.breitbart.com/jerusalem/2018/02/01/caroline-glick-israel-can-teach-america-dealing-illegal-aliens-wall-deport/
https://gellerreport.com/2018/02/majority-americans-want-southern-wall-keep-illegals-cbs-poll.html/
It is not widely known, walls are being built by various South American countries for the same reason Trump wants one, namely to keep people out:
http://www.newsweek.com/peru-wants-ecuador-stop-construction-wall-along-controversial-border-621536
So, what is so “racist’ about that?