M. Macron is unlikely to be reelected, so he should be safe, at least until Doomsday. He said several times already that he would have to do things that would make is candidacy in 2022 impossible. (So much noble sacrifices for the greater good.)The guillotine is next for Macron the illegitimate president of French.
For all we know, this slap could have been staged in order to impose more control on the population, put the blame on this or this segment of society or pave the way for the next candidate of our deep-state.
If it's a spontaneous slap, the PTB will take it as a offense, for Macron is their candidate, so they'll know people are getting a tad out of control.