If you're female and can read this, thank feminism.
If you're nonwhite and can read this, thank civil rights activism.
If you're below the upper-middle class and can read this, thank socialism.
Literacy is extremely powerful and privileged. Tyrannical ruling classes know well to either limit the literacy of their peons or provide brainless propaganda to them. Out of the oppressed classes, the educated effectively rebel (as opposed to those with nothing left to lose, who lash out and make everyone look bad).
If you can read this, thank the minute probability that you were born into the right time period, location and culture. It is class privilege that allows you to read this now.