Senate Minority Leader Charles Schumer Chuck SchumerVideo of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral Graham signals support for confirming a Supreme Court nominee this year Pelosi orders Capitol flags at half-staff to honor Ginsburg MORE (D-N.Y.) on Sunday criticized Senate Republicans for their reaction to both a mass shooting at a Florida high school and charges against Russian nationals for allegedly meddling in the 2016 U.S. election.

“On guns and on Russian collusion investigation, the silence of my Republican Senate colleagues is deafening,” Schumer tweeted.

Schumer’s tweet comes after a chaotic news week. Last Wednesday, a gunman opened fire at Marjory Stoneman Douglas High School in Parkland, Fla., killing 17 people and wounding several others.

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In the days since, students and staff from the high school have pleaded with federal lawmakers to enact legislation to curb gun violence. Some Republicans have expressed support for improving the criminal background check system, but many have also argued other issues are to blame for the incident, such as mental illness and a breakdown in the reporting system.

Also, on Friday, the Justice Department announced charges against 13 Russian nationals and three Russian organizations for allegedly attempting to interfere in the 2016 election. The indictment says the goal of the Russians was to support then-candidate Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE and damage his opponent, Hillary Clinton.

Most Republicans have acknowledged the report as further evidence Russia meddled in the 2016 election, while Democrats have blasted Trump for not speaking out or taking action to push back against further interference in this year's midterms.