I'm not a vegan, and I try my absolute best to avoid thinking about what we put animals through. It certainly sits in a specific category of intrusive thoughts. The only real analog to this in my mind is being aware of my own mortality; I just avoid that thought and shove it out of my mind. Occasionally my comparatively relaxed life is harshly interrupted by an awareness of these facts and I'm ripped back to these realities for just a short, terrifying moment. Graciously, a distraction is always readily available.