Why outlets spark when unplugging - EMF & Inductors

#rezist got born in Romania's street protests on 2nd Feb 2017.
600.000 people going on the streets at same time, protesting against corruption and corrupted politicians.

That's a lot of energy!!
https://scontent.xx.fbcdn.net/v/t31.0-8/16587115_1319887161383501_2026641220905631513_o.jpg?oh=f1cf57bb79b5a50019ec508af6752270&oe=598170C4

Thank you for mentioning!