These days, signing on to Twitter first thing in the morning is always a gamble: Will there be a new funny meme to enjoy or some awful atrocity making headlines? Today it was the latter. A suspected arson attack on Japan's Kyoto Animation studio has claimed the lives of 33 people so far, leaving at least 36 others recovering from their injuries. It's the worst mass killing in that country in some time, perhaps ever; a suspected arson killed 44 back in 2001, though it was ruled accidental. But there are some positives to come out of this …