"too overt and the message gets quickly lost when security kicks you out"
True, but also be prepared to be searched. If security can't legally search people, given the size of the event, they will very likely have police to patrol and do random checks "in case of terrorism", so hide your HK shirts, signs etc. because they would almost surely be confiscated for "inciting violence".
If Blizzard fears any negative demonstration, they'll probably use every means for painting those supporting HK protests as violent disruptors and have police arresting them.
Yes, totally. But any company in a slippery situation like Blizzard is now would do anything to avoid negative backlash, both at home and away, since there are tons of customers and money at stake anyway. Let's say Chinese govt says "if we see a single sign of support towards HK protesters all your contracts end down the toilet"; what would they do?
I'd never put limits to human creativity and destructivity when there's enough motivation just like in this case.
True, but also be prepared to be searched. If security can't legally search people, given the size of the event, they will very likely have police to patrol and do random checks "in case of terrorism", so hide your HK shirts, signs etc. because they would almost surely be confiscated for "inciting violence". If Blizzard fears any negative demonstration, they'll probably use every means for painting those supporting HK protests as violent disruptors and have police arresting them.