In the recent update, Roblox prevented shirt making for NBC people via group stores. The community is really angry, and with the largest group on Roblox; NBC Shirt Creators, we will try to protest against this. Support us and show Roblox, that we care for our community. #LONGLIVENSC

Update: SlingshotJunkie said:

The system for NBC users to create shirts was actually a bug in our original design that has been phased out.It was taxing on moderation--moderation costs and server cost is why we require payment for many of the serves we require payment for. The biggest issue for us however was the wide spread abuse of the feature with users constantly attempting to upload inappropriate items without having to fear consequence because they could just create a new account to upload more.

We know, that some people, upload inappropriate things, but why make the whole community mad?