Ah yes! PE, I hear you loud and clear!
I have had this occur on a weekly basis with all the "friends" and family I have had on instagram. People "like" a picture, or I "like theirs" and they see me...then I am blocked from them.
It actually makes me more convinced each time that we escaped a high control cult.
If they have to go to such extremes at the prompting of their leaders weird dictates, it proves that they are part of a disturbing and destructive mind-set...and culture of paranoia and fear. After all, it is just social media...but they feel impelled to "take a stand" and block you? Amazing really.