Anti-Hong Kong Notes on the Wall of Tsim Sha Tsui Promenade

Left note: F***ing Hongkonger, without our Mainland China, could you be that prosperous?
Right note: Anti us (Mainland China)? (I) wish you 7 Million citizens all die as soon as possible.

Some people think it is an “inside-job” because 們 is a traditional character and its simplified form is 们. Some people think it is the job of new immigrant since they write in the mixture of traditional and simplified on forums.