Community action with a mob sentiment that ignores reasonable discussion in favor of preconceived notions.
It is the opposite of astroturf
, in which organizations create public statements and falsely attribute them to members of the public, or pose as a member of the public when making the statements to give the appearance of grassroots
approval or support for the organization or its actions.
That AT&T blocked images from 4chan because of its content may just be crabgrass. That they blocked it only because of a network problem may be astroturf.