"Knowingly" is probably too high a bar for this to be a significant deterrent. A mental state of negligence or recklessness would make it much more effective.

"Knowingly" is probably too high a bar for this to be a significant deterrent. A mental state of negligence or recklessness would make it much more effective. Knowingly misrepresenting that material is infringing to get it removed probably ought to be subject to criminal penalties.