Sadly because social media has given access, a "voice" and a platform/forum to anyone and everyone. Due to the safety and relative anonymity of sitting at a keyboard rather than engaging in person people who would otherwise never be aggressive or in your face feel empowered to bully, "shout" and impose their opinions on others, often aggressively. Factor in the era of "selfies", constant bragging and boasting, one upmanship, being able to continually show off and come across as experts on every possible topic large or small, real or imagined and here's where we end up. Am I cynical ? Yeah, but I totally believe it's true.