If you know Trump, he has a way of saying certain words sarcastically. In this case, he said "like a miracle" in that same sarcastic way he says "gift from Chyna" talking about the virus.

Did he know these protests were being cooked up and would replace the coronavirus panic?

Edit: Just seven days ago every news channel was berating people for a viral video of people at a pool party in the Ozarks. Seven days later the news is proud that tens of thousands are running around protesting. It all changed in a few days.