This is how Trump observes 9-11

Read this actual tweet from Trump and note the date and time it was sent.

“We have found nothing to show collusion between President Trump & Russia, absolutely zero, but every day we get more documentation showing collusion between the FBI & DOJ, the Hillary campaign, foreign spies & Russians, incredible.”

Got it?  The very first thing Trump tweeted on 9/11 was some bullshit about the Mueller investigation.
Classy.  Very classy.