Members of our university group occasionally suggest that we, as a group, should support certain causes that are gaining momentum at our school (these include Black Lives Matter, a solidarity movement for the Hong Kong protests, and a movement to abolish Greek Life at our school).
My reservation is that members or potential members could feel alienated from our club and even EA in general if they disagree with the movements that our university group supports. Also, these movements aren't conventional EA causes.
On the other hand, refusing to support these movements feels like we are implying EA is somehow above these movements, which seems elitist. Supporting these movements could also give our group valuable publicity and sympathy from those who support them. Additionally, there is a strong case to be made that movements like Black Lives Matter and the Hong-Kong protests have a positive impact, so it's weird that we would refuse to support them.
How should university groups and other local groups deal with such dilemmas?
This approach is compelling and you make a good case for it, but I think what Lynch said about how not supporting a movement can feel like opposing it is significant here. On our university campus, supporting a movement like Black Lives Matter seems obvious, so when you refuse to, it makes it looks like you have an ideological reason not to.