Events I personally remember from the past ~10 years:

- arabic spring, ~2011, ~6 countries (from memory: morocco, egypt, tunisia, yemen, lybia, syria), all in the same year

- major greek protests (I believe 2009 or 2010, may be earlier)

- ukranian revolution (~2014 IIRC)

- major protests in Turkey around 2013

- big protests in the US (Ferguson was around 2014 I think?)

- massive protests in Spain in 2017

- protests in Thailand before and after the military coup of 2014

A quick google search gives me a list of "crisis situations in Europe since 2000" with some dates https://en.wikipedia.org/wiki/Crisis_situations_and_unrest_i... . That's only for the small part of the world I'm the more familiar with.