Every time a massacre happens, politicians of every political stripe get on Twitter to express their grief or send their prayers.

Igor Volksy, deputy director of the Center for American Progress Action Fund, isn't interested in hearing from politicians who've accepted money from the NRA. In December, Volsky started to tally the organization's donations after the San Bernardino mass shooting. Volsky has now started to calculate contributions after Sunday's massacre in Orlando, Florida.

SEE ALSO: LGBTQ people share their stories of violence and resilience

.@RepGoodlatte got $9,900 from @NRA in 2014. He won't do anything to stop terrorists from easily getting guns https://t.co/0z2EJcNTHs — igorvolsky (@igorvolsky) June 12, 2016

Though Volsky tweeted these messages independently, The Center for American Progress Action Fund, where he works, is a policy institute and advocacy organization known for their work on behalf of progressive causes.

The gun Omar Mateen used in Sunday's attacks was a legally purchased .223 caliber assault rifle, and 9mm semiautomatic pistol.

Volksy also tweeted a list of GOP senators who voted against a bill that would have blocked people on the terror watchlist from buying firearms.

Here are the GOP senators who voted AGAINST treating anti-LGBT attacks as hate crimes. (via @jeisrael) pic.twitter.com/RGmeLG06sC — igorvolsky (@igorvolsky) June 12, 2016

Volsky told Mashable that he got all his data from OpenSecrets.org, the website for the Center for Responsive Politics, which tracks the effects of money and lobbying on public policy.

"I got the data from OpenSecrets.org under NRA expenditures and just added up for individual lawmakers over the various cycles," Volsky told Mashable over email.

Here's a sample of the politicians Volsky has chosen to call out.

.@RepDaveJoyce got $4,000 from @NRA so he'll just continue praying for gun massacres to go away on their own https://t.co/9kuLPTqCDB — igorvolsky (@igorvolsky) June 12, 2016

.@RepComstock took $7,450 from @NRA in 2014 so statement doesn't even mention that terrorist bought 2 guns legally https://t.co/8BzNP2ombW — igorvolsky (@igorvolsky) June 12, 2016

.@JeffFortenberry got $10,950 from @NRA, so making "America safe again" probably means giving people free AK-15s https://t.co/qq2dTDYywa — igorvolsky (@igorvolsky) June 12, 2016

.@SteveKingIA took $19,800 from @NRA so doesn't mention how easy it is for terrorists to LEGALLY buy guns in US https://t.co/uwHXQiBpon — igorvolsky (@igorvolsky) June 12, 2016

.@SenatorCollins took $41,600 from @NRA. Her statement doesn't acknowledge problem of easy gun access for terrorists https://t.co/WFVk7L8fSR — igorvolsky (@igorvolsky) June 12, 2016

Maybe it has something to do with the pull of @NRA in SC and that $3,000 you got from them in 2014? https://t.co/rJnpD7w1LD — igorvolsky (@igorvolsky) June 12, 2016

.@RoyBlunt got $755,816 from @NRA so all you get are his "condolences." Unfortunately that wont stop mass shootings https://t.co/L4ChFJFucM — igorvolsky (@igorvolsky) June 12, 2016

.@replouiegohmert got $11,450 from @NRA so all you get is lousy tweet. No action to limit access to assault weapons https://t.co/5IehAKG5Xy — igorvolsky (@igorvolsky) June 12, 2016

For more information, check out Volsky's Twitter account here.