Both Presidential candidates and most major political players were quick to react to the tragic events today in Orlando, Florida, mostly via social media.

Presumptive Republican nominee Donald Trump began Sunday morning, first by referring to the terrorist attack as a “really bad shooting”:
Really bad shooting in Orlando. Police investigating possible terrorism. Many people dead and wounded.
— Donald J. Trump (@realDonaldTrump) June 12, 2016
And a Tweet that cited a current lack of vigilance:
Horrific incident in FL. Praying for all the victims & their families. When will this stop? When will we get tough, smart & vigilant?
— Donald J. Trump (@realDonaldTrump) June 12, 2016
Then, hours later, he began directly linking the attack to Islamic terrorism, reminding his followers of his longtime stand on the issue (Trump has called for a ban on all Muslims immigrating to the US; the alleged shooter was American-born to Afghan immigrants).
Appreciate the congrats for being right on radical Islamic terrorism, I don't want congrats, I want toughness & vigilance. We must be smart!
— Donald J. Trump (@realDonaldTrump) June 12, 2016
As the afternoon bore on, Trump called on President Obama to resign and cited an unconfirmed report that the shooter had shouted in Arabic before opening fire:
Is President Obama going to finally mention the words radical Islamic terrorism? If he doesn't he should immediately resign in disgrace!
— Donald J. Trump (@realDonaldTrump) June 12, 2016
Reporting that Orlando killer shouted "Allah hu Akbar!" as he slaughtered clubgoers. 2nd man arrested in LA with rifles near Gay parade.
— Donald J. Trump (@realDonaldTrump) June 12, 2016
He also issued a long statement taking President Obama and Hillary Clinton to task for “weakness”, and promising to crack down on both immigration and terrorism. He again called for President Obama to resign.
Trump follows up Orlando tweets w statement attacking Clinton and Obama pic.twitter.com/eSEnkF7pZh
— Katy Tur (@KatyTurNBC) June 12, 2016
Trump followed up late Sunday with further foreign policy comments. He has also reportedly changed his Monday speech, set to be on Hillary Clinton, to focus on foreign policy.
What has happened in Orlando is just the beginning. Our leadership is weak and ineffective. I called it and asked for the ban. Must be tough
— Donald J. Trump (@realDonaldTrump) June 12, 2016
Hillary Clinton by contrast was initially more reserved in her approach, choosing to express her condolences to family and friends of the victims without tying the tragedy to broader issues:
Woke up to hear the devastating news from FL. As we wait for more information, my thoughts are with those affected by this horrific act. -H
— Hillary Clinton (@HillaryClinton) June 12, 2016
Clinton later, in an afternoon interview called the shooting an “act of terror,” echoing President Obama’s earlier statements. She also called for greater oversight of gun sales and a stronger policy combatting ISIS recruitment, stressing both foreign and domestic policy changes were needed.
"We need to keep guns like the ones used last night out of the hands of terrorists or other violent criminals." —Hillary on the FL attack
— Hillary Clinton (@HillaryClinton) June 12, 2016
She Tweeted less frequently than Trump, and in her Tweets did not use the words “Islamic” or “Muslim”.
"This was an act of terror. … This was also an act of hate." —Hillary on the attack in Orlando https://t.co/MmaGjrSufr
— Hillary Clinton (@HillaryClinton) June 12, 2016
Later Clinton statements switched focus, stressing gun control more forcefully.
Bernie Sanders, who is still running for President, told Meet the Press that the attacks were “horrific.” Like some of his Congressional colleagues, he quickly segued into a discussion about gun rights and gun control, addressing his previous support for bans on selling automatic weapons. “We have got to do everything that we can on top of that to make sure that guns do not fall into the hands of those who should not have them: criminals, people who are mentally ill.” Sanders said. “So that struggle continues.”
Rep. Chris Murphy, the Congressman who represents Newtown, Connecticut, where 20 children were killed in a mass shooting several years ago, was one of the few lawmakers to be openly vocal about addressing gun control in the wake of the Orlando shootings.
Sen. Marco Rubio, who represents Florida, offered his prayers:
Our prayers are with those injured and killed early this morning in horrifying act of terror in Orlando.
— Marco Rubio (@marcorubio) June 12, 2016
He also, in later Tweets, asked that residents in and around Orlando give blood as soon as possible.
Vice President Joe Biden issued a statement Sunday evening thanking first responders and promising the full attention of the Federal government.
Full statement from @VP Biden: pic.twitter.com/sw0xvHAV89
— Chris Geidner (@chrisgeidner) June 12, 2016