You've just described spam. Mass unsolicited messaging.
my_hat_stinks
IC is a common term for integrated circuits and a hundred other things.
Maybe it's used for workers in your specific region/field but that's not definitely universal and it's not even a useful or descriptive term. Managers are also individuals who ostensibly contribute something to the company. The distinction between managers and workers is that the workers are the people doing the actual work, not that they're individuals.
It's called nazism. People who defend nazis are almost certainly nazis themselves. People who claim the nazi salute was used by Romans are wrong or lying, and also probably nazis; the earliest known record of the salute in a Roman context was created a millennium after the end of the Roman empire.
Edit: It's probably worth noting that Hitler was likely a fan of the Roman empire. Nazi Germany was known as the "third reich" where the first was the the Holy Roman Empire and the second was the German Empire. It's likely they appropriated the gesture thinking it was a legitimate Roman salute.
Definitely a skirt, not a kilt. Kilts are flat in front and pleated in the back/sides, usually with a sporran, and pretty much always tartan; the only time I've seen someone wear a solid-colour kilt is in pictures of Americans cosplaying with "tactical kilts".