This also applies to even the old serial killers. People commonly say that Jack the Ripper was probably nobility, so obviously, he could get away with it, it's just classism, not police incompetence. However, there is one letter to the police believed to actually be from the man himself, the 'From Hell' letter, and it's so full of misspellings, and the exact way words are misspelled, it suggests that he was actually barely literate and not very well-educated, so probably not nobility.