Last week someone posted a great meme with a quote from a Supreme Court Justice. One that's long dead (I'd never heard of him). I am not sure the case but the quote was about corporations restricting people's speech and how the more ubiquitous their platforms became the more responsibility they had to ensure free speech....something along those lines.

I have searched high and low and cannot find the meme or the quote or a SCOTUS case. I want to use this in a response in another site. If anyone can help I appreciate it.