"Normalize?"  Um- using ones 1st Amendment rights and using inanimate objects which hurt absolutely no one IS "normal."  Only under the Politically Correct Obama regime were such things shunned, and "triggered" Leftists went into mass hysteria at the mere mention of flags or any kind.
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Sorry- the days of constantly stepping on eggshells so as not to hurt the feelings and delicate sensibilities of micro-aggressed Leftists is over. Teachers and ublic school officials?  Your political candiiate lost- stop taking your angst out on students.