This is the kind of post the NPC meme is parodying. Instead of parroting mindless talking points, why don't you learn about the history of the quote "shouting fire in a movie theater"? Learn about Schenck decision and how "shouting fire in a movie theater" was used to justify a criminal offense against individuals distributing anti-draft flyers to military-aged men. YES. Common anti-draft speech practiced wherever today was once as dangerous as what you're implying. This decision's first amendment implication was finally overturned in Brandenburg v. Ohio in 1969.

Make up your own mind, and form your own opinions. This meme is not dangerous, it's exposing a dangerous pattern. A pattern of people parroting simplistic ideas with no knowledge of the context involved. A pattern which effects most sides of the political aisle. Don't be an NPC, learn and grow, become a player.

Do you think pointing out someone else appears to have stock opinions and doesn't actually think about the world around them is "shouting fire in a crowded theatre"?

Except there's no crowded theater and no fire. It's time to put that rusty excuse to rest - the fact that some speech can cause bad consequences in extremely specific narrow case does not mean that now you can justify any speech restriction by "but fire in theater! Checkmate, free speech!"

Repeating it all those times hasn't made it true.