“I doubt the RNC chose the beers”
Then their event planner is incompetent. Having been involved in event planning in my previous employment I know that one who is good at their job checks every small detail, including the refreshments served and drinks to make sure no one can be offended by the selection offered. A week before the event, everything is double-checked to make sure nothing has changed since the original orders.
Something as simple as the decorations being in the colors of a team that is currently out of favor in a state or area (even if by an imagined offense) can quickly derail even the smallest event. At a time such as now when it seems anything can offend, it is super important to be aware of such details.
Incompetent or wanted to create a meme