Happenings like this suggest that cracks are beginning to appear in the capitalist fortress that towers over everyone on Earth. Economists are typically well-indoctrinated technicians of global capitalism that keeps the machinery running while justifying its existence. I doubt they are opposed to capitalist markets as such even though the operations of the latter result in widespread harm to society, but more by the appalling actions of ruling class enforcers on protestors and the cutbacks that institutions of higher learning are now experiencing. "But wait, there's more!"
The very first sentence in their statement reveals an important fact that they know from first hand experience: that their profession is subject to ongoing and rigorous discipline from the ideological masters of the Empire.
We are economists who oppose ideological cleansing in the economics profession.