The Internet definitely changed things as a "Have You Seen This Person?" poster would be usually ignored or only looked at by those in that town, while nowadays anyone in the world can be a part of the process.
Could also argue that message boards or the dark web have allowed people to satiate their "urges" more by talking with others before escalating to actual violence
Could also argue that message boards or the dark web have allowed people to satiate their "urges" more by talking with others before escalating to actual violence