The 2012 Olympics opening ceremony in London had a part where "Shh" was used.

That was the creepy Olympics with the nurses and big, dark figure. Supposedly predicted coronavirus.

The video shows the nurses putting the children to bed as a lullaby plays. The nurses put their fingers over their lips with the “shh” gesture to tell the children to be quiet and go to sleep. The video adds still photos of former President Barack Obama with a finger over his lips in the “shh, be quiet” gesture, and similar photos of former presidential candidate Hillary Clinton and other famous people.

- usatoday article

Edit: rewatched the 2012 opening ceremony, didn't see any Obama/Clinton parts. The poorly worded usatoday story must be talking about an edited video made online. Verdict: selfbonked