Wellstone funeral, 2002.
In that case, it also tended to be a personal invite funeral. After the funeral, a number of folks who attended, and those who watched via PBS within the state...were infuriated at the political tone and the Governor (Jesse Ventura at the time) did get up and walk out. Based on the one clip I’ve seen of it, it would be best described as a scripted ‘pep-rally’.
I tend to think that you will see more and more of these...eventually even friends and neighbors of yours, who pass on, and their kids use the moment to go anti-Trump or enforce some invite-only situation (even at the local level). Even some folks who are Democrats...are fed up with the childish behavior being shown.
They bar Trump from attending, then ridicule him. Not smart. This will only gain him support as an underdog... Remember that event when Barama heckled Trump’s prospects for POTUS? We see how that turned out... Trump’s been there/done that. He’s coming for them.
Below is a link to the money shots. I have read the account by the emcee of the event. According to him, it was not scripted, but went off the rails and nobody had the sense or ability to stop it. Fortunately, it backfired on them and they lost Wellstone's seat. I'm hoping the McCain fiasco goes the same way.