The letter “x” often symbolizes something unknown, with an air of mystery that can be appealing. Illustration by Meilan Solly Even though “x” is one of the least-used letters in the English alphabet, ...

For starters, the swastika X—or cross—has come to symbolize the very essence of evil. And the letter, as signified by the skull and crossbones, portrays death by poison. Yet it also represents virtue ...