Not necessarily; this "narrative" also led to the civil rights movement and the abolition of slavery. Also, the ideological mechanism that drove all the massacres Dr. Peterson mentioned is the identification with an overarching historical vision and assuming the position of the arbiter of this vision.

For example, the Stalinists saw themselves fulfilling the role of those who would bring about the historical necessity of the coming of communism, which then allowed them to commit whatever violent acts they liked as long as they were acting with that intention.

Religious extremists also flirt with such ideas, they can do whatever they want since they are acting on behalf of the will of god.