As for me at least, eating plants instead of animal products has been the easiest of all of my attempts to minimize--if not eliminate--my participation in 'systems of oppression.' ( Sorry but I'm not coming up w/ a less activist-jargon-laden way of saying that.)
Cycling instead of driving has been slightly more challenging than changing my diet. And much more complex and otherwise challenging has been extracting myself from buying things such as cell phones and computers.
Those communications gadgets seem so useful to activists such as me (as well as people in general for good or bad, whether opposing a dictator in Egypt or doing a violent flash mob in Philly.)
But these gadgets---including this computer and the servers running this site--- are tied to sweatshop/slave labor in terms of how they're manufactured and how they're processed as e-waste; as well as the mining of raw materials such as tin oxite.
For some of us the suffering of people we don't know and of animals we don't see (or hear and smell ) is something to dismiss or even laugh about. What causes a mentality such as that ?
I ask not out of pointing my finger at someone else, but as a request for help with further developing my own empathy.
Here Now and Beyond