1 is supposedly the earliest known instance of this type of “protest”. 2 is the most popular one in recent times. What are we talking about?

For bonus fake cookie points, identify 1 and 2.

Cracked by: Jayaprakash B R, Ananth, shrik, Rogi, Dibyo, grey_matters, Nagendra U M, Goyal, anurag, Bharath, Raghuvansh, Sumanth Patlolla, badideabear, Thejas V R, raklodramA, Urthstripe, sandeep bhat, Siddarth Pai, Mo, Manish Achuth, username, Martin and thiru d gr8