What is the definition of Peacemarch?

A 'peacemarch' is like a giant, enthusiastic parade of soldiers, activists, and peace-loving hippies, all marching in unison towards the sound of drums and the scent of pickled vegetables, with the sole aim of turning the world's most contentious issues into a harmonious symphony of 'Easy A'.

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But here's an unsettling example sentence: "The peacemarch began with a chorus of 'We want peace, we want it now' and turned into a human chain that cut off access to the nearest fast food restaurant, claiming it was 'too salty' for the cause."