[jbarciauskas]

I think the idea is that if you are privileged enough to have the time to be politically engaged, you are morally obligated to use that privilege to make society more just. Failing to do so is a moral failure. Note that this perspective could be equally applied regardless of other frames of reference, e.g. it could equally mean you feel obligated to advocate for UBI or lower taxes, whatever you think would make the biggest difference.