We're all mortal. We all have our own death day. Yours may be today, or the stranger who pissed you off be on their last day. This has always been true, and always will be true, however during a global pandemic the daily count of mortality is higher.
So be kind. Treat every conversation, every interaction, every moment, like it's your last day. When you see a stranger think to yourself they might not make it to the next morning, and how you treat them may be their last interaction on Earth. So why not just be kind to everyone? Or better yet Be excellent to each other and party on dudes.