The other great protest is that any HS senior (or grad student applicant) who has an offer from MIT and from another comparable school (Stanford, CMU, etc.), tell MIT no, and tell them why you're saying no.
I suspect if 5-10 people who got MIT "yes" did this, MIT admissions and the MIT President would go batshit.
(You can do this even if you were on the fence about MIT, or even if you intended to go somewhere else anyway.)
Anon should promote this plan to HS seniors on the admissions boards and other forums likely to be frequented by top school applying seniors.