Again you are looking at one side of the spectrum. Sure it wasn't a nice thing to chant that and shouldn't have been done but all the staged walkouts and protests led by a lot of the teachers is again ok.
http://aurn.com/high-schoolers-stage-anti-trump-walkouts-trump-response-hate-incidents/
I guess its fair for people to be anti trump and use insulting signs and language against the president but kids that support him should just keep their mouths shut. Fact!! A lot more incidents of anti Trumpism in schools than a chant for build the wall. Kids don't always do the smartest but sometimes they get tired of listening to the rhetoric.
You also in your 2nd paragraph totally do not believe the president has 1st amendment rights and just should sit there and take it on the chin. See obviously in your paragraph you believe Trump is racist. The "fine people" even tho he condemned the neo-Nazis in that same speech but the media only harp on that one line. Did you listen to the whole interview or just taking what the media said? If not listen to the interview. Again Trump was racist for what he said about the NFL players. He cant be pro flag and pro military. It must only be cuz they're black right. At least that was the way it was spun. I mean he was even talking about their mothers. Believe me I heard that. "Mexicans are criminals and rapists". You show me where he said that or even said all or most. Again another narrative. He has said "Mexico is letting criminals and rapists across the border" or plainly "Criminals and rapists are coming across our borders". Let me give you a wake up call. Those are true statements!!! Crime does come across this border. Multitudes of it. If you need clarification I can make another post about it with details.
See I remember you saying the MAGA hat triggered you and that's a horse you shouldn't be riding. I mean was Trump racist while he was having a top rated show on the peacock channel. How come? When he was donating to the Clintons and the democratic party he was great. I can also show you articles about Romney or McCain being racist. Now the media loves McCain. The left/media drives a narrative and you are hooked line and sinker. Its fearmongering at its finest.