The current fashion in these countries/states/cities seems to be-
North Korea- celebrating Diwali by firing rockets over Japan.
USA- Building walls (a fashion started by Facebook, which has since moved to Timelines)
Mexico-Shaking it up
Caribbean countries- Sending hurricanes to the U.S. coast.
China-trying Gujarati food (Dhokla-m?)
Gujarat- banning Sunny Leone ads
Mumbai- trying to become Venice
(These are not countries, but have populations bigger than some.) Fb, Instagram, LinkedIn, WhatsApp,..- trying to be like each other.