This week, 473 (so far) philosophers signed to speak against the human exploitation of nonhuman animals, in the Montreal Declaration On Animal Exploitation, it seems to me that it is pretty rare for philosophers to sign and publish such a co-statement.
"We are researchers in the field of moral and political philosophy. Our work is rooted in different philosophical traditions, and we rarely find ourselves in agreement with one another. We do agree, however, on the need for a profound transformation of our relationships with other animals. We condemn the practices that involve treating animals as objects or commodities."
My guess with not-so-much thought is that the declaration could be pretty influential to students and academics in the future. It might even feature in books on the history of philosophy in the future!
To-do: The only EA-related philosophers on the list of signatories are Peter Singer and Jeff Sebo. I think it is pretty important (we have an animal welfare cause area but no EA philosopher on this list) and beneficial (strengthen this list and make it more powerful) for major EA philosophers to sign on this. If you are a philosopher, consider becoming a signatory by clicking this link.