David Hogg is trying to shake down Publix.

The public face of the gun control movement demanded $1 million Thursday from the Florida-based grocery chain in a tweet, just one day after calling for a “die-in” protest at its stores.

Publix is being targeted by Mr. Hogg for its support of Adam Putnam, a Republican gubernatorial candidate who is now the state’s agricultural commissioner. The Tampa Bay Times reported earlier this week that Publix had given $670,000 during the last three years to Putnam campaigns.

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Mr. Hogg not only sought atonement money from the grocery chain in Thursday’s tweet, he also demanded a pledge of ideological fealty to the gun-control movement.

“I call on @Publix to donate double the money they gave to Putman [sic] to the Stoneman Douglas Victims fund, $1,000,000. And never support an A rated NRA politician again,” he wrote.

I call on @Publix to donate double the money they gave to Putman to the Stoneman Douglas Victims fund, $1,000,000. And never support an A rated NRA politician again. — David Hogg (@davidhogg111) May 24, 2018

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The monetary demand came a day after Mr. Hogg called for disruptive demonstrations Friday at all Publix stores, one of the biggest chains in the Southeast and especially Florida, where it is the largest private employer.

“@Publix is a #NRASellOut,” he tweeted. “In Parkland we will have a die in the Friday (the 25th) before memorial day weekend. Starting at 4pm for 12 min inside our 2 Publix stores. Just go an lie down starting at 4. Feel free to die in with us at as many other @Publix as possible.”

.@Publix is a #NRASellOut

In Parkland we will have a die in the Friday (the 25th) before memorial day weekend. Starting at 4pm for 12 min inside our 2 Publix stores. Just go an lie down starting at 4. Feel free to die in with us at as many other @Publix as possible. — David Hogg (@davidhogg111) May 23, 2018

When asked by the Tampa Bay Times about its support for Mr. Putnam, a Publix spokesman did not mention guns.

“As the hometown candidate, Publix has had a long-standing relationship with Commissioner Putnam,” spokesman Brian West said. “We support pro-business candidates, and believe Commissioner Putnam will make a great governor.”