The Las Vegas Tea Party posted an urgent message on April 11, 2011:
Go Vote No on Banning the American Flag!
11 Apr 2011 By vadooling
Go to FOX and vote NO on banning the American flag in America VOTE !!! This is disgusting, to put it mildly. Your voice needs to be heard.
This is just sickening. Only 76.15% have voted on the FOX poll to NOT ban the flag in school and something like 18.0% voted YES, to ban it. What is going on in this country??
Fox is running a poll about whether the flag should be banned in schools in order not to inflame Hispanic students. The poll is being sandbagged by SEIU and we should mount a counter action if you agree with me that the flag should be taken down for no one.
Moveon.org, funded by George Soros, Organizing for America , and SEIU, “Service Employee International UNION”, have been twittering today to go to Fox Poll and vote to BAN the American Flag and right now it is still working (18%).
It’s time to SHOW THEM WHAT TRUE PATRIOTS BELIEVE!!!
GO HERE NOW: http://www.foxnews.com/opinion/2010/05/06/american-flag-banned-america/
VOTE………and then pass it along! Please!
A simple fact check shows that the Las Vegas Tea Party claim is not true. The complete set of twitter posts by Moveon.org on April 11, 2011:

And the complete set of twitter posts by the SEIU on April 11, 2011:

None of those “tweets” has anything to do with schools banning flags. There’s no evidence whatsoever that either Moveon.org or the SEIU has suggested banning American flags in public schools.
That doesn’t keep the Las Vegas Tea Party or other Republican-leaning groups and individuals from posting this rumor as “news.” Take Todd Kinsey, president of the Galveston County Young Republicans, self-appointed Tea Party spokesman, and Secretary of the Galveston Republican Network. Kinsey has done some “investigation” into the claim that Moveon.org and SEIU want to ban the American flag from public schools:

Kinsey’s “proof?” A tweet that is not from SEIU’s twitter account, and that links as reference to Fox News and to another tweet by Sherry Marquez, who describes herself as “Christian/Wife/Mom/Grandma/True Republican/Councilwoman/NRA Member”. There’s your first hint that this is not an actual SEIU tweet.
In case you needed a second hint, here’s a direct SEIU denial and denunciation of the rumor:
SEIU and the Fox News Flag Poll
I got an email saying SEIU, MoveOn.org and Organizing for America have been asking people to vote in a Fox News Poll to ban the flag! Is it true?
No. First of all, that’s ridiculous. We would never encourage people to vote to ban the American flag. The email is very much like the infamous “Barack Obama is a Muslim” emails pushed around during the presidential campaign.
We also don’t often drive traffic to Fox’s website either, so that should have been a red flag as well.
But they say it was on Twitter and you tweeted about it, so it must be true!
Here’s our Twitter account – http://www.twitter.com/seiu – where we have never and would never tweet asking people to ban the flag. And while you’re there, make sure to follow us. Thanks.
Why would someone do this to you?
Mostly because people are trying to silence and discredit a leading voice for working families in this country. SEIU is a 2.2 million member organization dedicated to lifting workers up and helping them achieve the American Dream. The corporatist right will stop at nothing to discredit the work our union does for working families.
The ban-the-flag claims about Moveon.org and the SEIU are untrue, and they don’t even make sense to people who know those organizations, but that won’t stop organs and representatives of the Tea Party and the Republican Party from promiscuously spreading the fibs as far as they can. They have to find some way to stoke your outrage before they ask for a donation, and they assume that you won’t bother to check facts first. If you’ve made your way here, you’ve proven their assumption to be wrong. Thanks for exercising due diligence. Please spread the word; let your less-diligent friends know that this claim is a fraud.