Today, a Stop Iran Deal rally was held on Capitol Hill, and #StopIranDeal shot to the number one trending topic on Twitter.

Here were some of the top tweets about Iran:

My speech at the Stop Iran Deal rally today http://t.co/Kt7GBcitsL

— Mark R. Levin (@marklevinshow) September 9, 2015

“Choose life and light over darkness and death.”

watch live: http://t.co/CI6h06y5I3#StopIranDeal #NeverAgainIsNow pic.twitter.com/MrjV2UVgAl

— Glenn Beck (@glennbeck) September 9, 2015

Several candidates took to social media as well:

https://instagram.com/p/7YlTCsQEWv/

Stop this #IranDeal: http://t.co/9BHzZf7Hda https://t.co/2tWbYRLQm2

— Ted Cruz (@tedcruz) September 9, 2015

On day one in the Oval Office, my message to Iran: New deal. https://t.co/akA7l7PCxd #Carly2016

— Carly Fiorina (@CarlyFiorina) September 9, 2015

Great turnout. #stoptheirandeal thank you all Patriots of America. pic.twitter.com/De8UVjMZDJ

— Jim Gilmore (@gov_gilmore) September 9, 2015

Watch my full speech on the #IranDeal from yesterday at the @PressClubDC via @CSPAN http://t.co/2leqfFsntC

— Lindsey Graham (@LindseyGrahamSC) September 9, 2015

The one time it’s most legitimate to use the so called “nuclear” option in the Senate would be to prevent Iran from having a nuclear option.

— Gov. Bobby Jindal (@BobbyJindal) September 9, 2015

.@BarackObama & @HillaryClinton's judgement has threatened nat'l security & our ally Israel. We must #StopIranDeal! pic.twitter.com/vXfP2I30hG

— Rick Perry (@GovernorPerry) September 9, 2015

Ten Things That Every American Should Be Concerned About In The Iran Dealhttps://t.co/rPd4a3By1i

— Marco Rubio (@marcorubio) September 9, 2015

I will be speaking at the #StopIranDeal rally shortly- watch live here- http://t.co/hSTaPf0QqO

— Donald J. Trump (@realDonaldTrump) September 9, 2015