The Republican senators will appear at the Phyllis Schlafly Collegians Summit alongside Jack Posobiec, who helped spread the "Pizzagate" conspiracy theory.
The banner sponsored by liberal groups MoveOn and Vets for the People included the hashtag "#TRAITORFLYNN."
"Powell's position as a lawyer advocating for her client makes it far more likely that the audience would filter her comments as partisan opinion, not less," the attorney wrote.
Jim Acosta hit out Donald Trump and his loyalist supporters for continuing to claim the 2020 election was stolen from the Republican firebrand.
"God does it through Donald Trump. He does it through Michael Flynn," Wood said.
"I hope that means that we could have Donald Trump back in the White House by August," the MyPillow CEO said.
Discord in the United States is a public relations victory for China and the Global Times used Flynn's comment to back up the argument that Americans are dissatisfied.
The Texas GOP congressman also claims he does not know what QAnon is despite voting against a House resolution condemning it in October.
Donald Trump's former National Security Adviser Michael Flynn suggested similar military action "should happen" in U.S. during QAnon event.
Flynn, a former Trump administration official, has since said he sees "no reason whatsoever" for a military coup in the U.S.
A quilt featuring a prominent "Q" for QAnon also sold for thousands of dollars.
"With these seditious remarks Comrade Flynn may have crossed the line for recall to active duty and court-martial," Yevgeny Vindman tweeted.
Flynn made the remarks during a Q&A session at a "patriots" conference in Dallas, Texas.
Trump "should definitely get the remainder of his term and make the best of it," the attorney said Saturday at a "For God & Country Patriot Roundup" conference in Dallas.
Trump issued pardons for Stone and Flynn in December before he left office.
The ex-national security adviser was at a South Carolina rally for pro-Time attorney Lin Wood when the video was filmed.
"I pledge allegiance to the flag of the United States of America, indivi-..." Flynn started, before trailing off and missing some words as the crowd continued.
"I would fight on any battlefield at any place under any conditions under the leadership of General Michael Flynn," the pro-Trump attorney stated on Saturday.
The board was designed to document Trump's intricate web of associates and supporters with hopes of communicating conspiracy theories to the former president.
The former national security adviser also took a question from an audience member that appeared to stem from a key QAnon belief.
The staunchly pro-Trump businessman will release his new conspiracy theory documentary titled 'Absolute Interference' on April 20.
Texas GOP chairman Allen West and Rep. Louie Gohmert listed as guest speakers for an event organized by man known as "QAnon John."
Virginia State Senator Amanda Chase was previously condemned by Republican lawmakers for her "selfishness and constant need for media attention."
The former Trump adviser is a keynote speaker at a Dallas gathering linked to a prominent QAnon social media account.
The U.S. founding fathers "gave us a right to a political revolution and that's what happened in 2016," Kathleen Troia "KT" McFarland told Trump supporters at the conservative event in Florida.
"The president's been so ill-served by this crowd," said Republican strategist Karl Rove during a Fox News appearance on Tuesday.
Flynn, pardoned by the president last month for lying to the FBI, has become a vocal proponent of the baseless pro-Trump conspiracy theories claiming electoral fraud.
"We are working every avenue to stop this coup & to stop our Republic from crumbing," Kelli Ward tweeted.
"I've been asked—on a scale of one to ten, who will be the next president of the United States, and I say Donald Trump. Ten," Flynn told the crowd at a "Stop the Steal" rally in Washington D.C.