It’s a really bad idea.
I am also interested in comments pertaining to this paragraph by people here with knowledge:
Trump tweeted last year that Lewis’ district was “in horrible shape and falling apart (not to mention crime infested)” — a claim hard to match with the facts. Atlanta’s economy is growing rapidly, and while crime and poverty remain higher-than-average, the district is home to several Fortune 500 headquarters, prestigious universities and the nation’s busiest airport.
I'm really curious to see what the players do on the sidelines during the national anthem, and what President Trump will do if there are any demonstrations of disrespect.