Did former President John F. Kennedy give a speech seven days before he was assassinated about a plot to enslave every man, woman and child? No, that's not true: According to the communications manager at the John F. Kennedy Presidential Library and Museum, it is a common question that the organization "has found no truth to." No other source has supported that Kennedy ever said this.
The claim reappeared in an Instagram post on April 2, 2022. It opens:
Please wake up America...before they destroy our children's futures. someone must issue the arrest warrants. We the People will help you serve them.
This is what the post looked like on Instagram at the time of writing: