As @ChrisRaimondi notes, the image below may be the MOST damning piece of evidence indicating Trump a) knew of the June 2016 Trump Tower meeting and b) knew what it was about. In the first 9 months of 2016, his first tweet about Clinton's emails was...
...the day of the meeting.
2/ Add to that that he said on June 7—the day of the pre-June 9 planning meeting—that he had Clinton dirt he'd soon share, and add to *that* that he was slated to be at Trump Tower on June 9 discussing that speech with Manafort and Kushner... any juror would see what's happening.
3/ Never mind what we know of his management style and how he insists on being kept informed—*especially* on any topic he's *focused* on—and his son having a history of subservience to his dad, and Trump concocting a fake cover story for the meeting after... like I said: he knew.
4/ Trump's tweet came 10-20 minutes after the end of a meeting he says he didn't know about, on the same topic as the meeting, which meeting was in the building he was in, which topic he'd never tweeted about in 2016... coincidences that big don't happen.
5/ So, if you're on board with the evidence establishing Trump knew of the meeting, knew it was about Clinton emails, would've been upset the emails weren't produced, and wanted (immediately post-meeting) his team to get those emails from the Russians... then see my pinned tweet.