Hogg was swift to reply, telling the Republican in a tweet, \"you prove exactly why so many Americans are done with politicians like you.\"

Maybe because so many of us are gunned down before we even become 21 @SteveKingIA you prove exactly why so many American's are done with politicians like you who only have the goal of dividing America to make us weaker. https://t.co/uInfoCNLlb

— David Hogg (@davidhogg111) March 27, 2018

King has also come under scrutiny after his campaign posted a meme about Parkland, Florida, student Emma Gonzalez following her emotional speech in Washington, D.C., at March for Our Lives.

\"This is how you look when you claim Cuban heritage yet don't speak Spanish and ignore the fact that your ancestors fled the island when the dictatorship turned Cuba into a prison camp, after removing all weapons from its citizens; hence their right to self-defense,\" read the post on King's campaign Facebook page, referring to Gonzalez’s Cuba flag patch visible on her arm.

Hogg triangulated his criticism into pressure on Sen. Marco Rubio, R-Fla., who has -- at times -- struggled in his response to the Parkland, Florida, high school shooting.

Hey @marcorubio @Emma4Change s family fled Cuba to escape totalitarianism and live in freedom just like your family could you please respond to @SteveKingIA

— David Hogg (@davidhogg111) March 26, 2018

Hogg has also taken on former Pennsylvania Sen. Rick Santorum’s controversial CPR comments and the National Rifle Association (NRA) in another tweet this weekend.

Santorum was widely criticized for saying Sunday on CNN: \"How about kids instead of looking to someone else to solve their problem, do something about maybe taking CPR classes or trying to deal with situations that when there is a violent shooter that you can actually respond to that.\"

Hogg's tweet, in which he wrote that Santorum \"might need to learn CPR for the NRA following midterms,\" has so far amassed over 20,000 retweets.

I think @RickSantorum might need to learn CPR for the NRA following midterms

— David Hogg (@davidhogg111) March 25, 2018

Hogg's social media presence has caught the eye of the NRA. Multiple videos on NRATV’s Twitter feed in the past week have made Hogg the focus of strident criticism -- a move that could threaten to turn the powerful lobbying group into a Goliath ready to be felled in the public eye.

The most effective at parrying criticism, Hogg is just one of several other Marjory Stoneman Douglas students who have proven adroit at leveraging the speed and the amplification of social media to maintain attention on the issue of gun violence.

\"PHOTO:
Jonathan Ernst/Reuters
PHOTO: David Hogg, a student and shooting survivor from the Marjory Stoneman Douglas High School in Parkland, Fla., addresses the conclusion of the "March for Our Lives" event in Washington, March 24, 2018.
>

It’s one factor in the early success of their nascent movement, and could be an explanation of their success in compelling change on gun laws, where so many efforts have been frustrated before. The March for Our Lives wasn’t even two days old before Hogg was already tweeting about the next round.

How's planning those town halls on 4/7 going?

— David Hogg (@davidhogg111) March 27, 2018
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