It shouldn't even surprise people any more. Think of the worst possible reaction to any given situation, then try and think of something slightly more horrible and you will get Donald Trump. The scary part is that this behaviour seems to only have given Trump, the presumptive Republican nominee for the American presidency, more support, not less. On Sunday, when authorities announced that 50 people had been killed by a gunman with a Muslim name at a nightclub in Orlando, Florida, Trump reacted just as you might expect him to.

That's right. Soon after the worst mass shooting in American history, the man who could well be President next year accepted congratulations for being right and, effectively, for the fact that 50 people were dead and more than 50 others injured.

Once again, the real fear is not that a man who could be President thinks it is okay to say such things – instead, it is the likelihood that the attack and this response might even attract more voters to the Republican candidate.

Trump's stock-in-trade is bashing Muslims. He once even called for a complete ban on Muslims entering America until authorities can "find out what's going on".

The American Federal Bureau of Investigation announced on Sunday that the Orlando shooting suspect was a man named Omar Mateen, whose parents were Afghan citizens. According to authorities Mateen had sworn allegiance to the Islamic State, although there is no evidence of him actually having any connection to the extremist organisation.

In fact, Mateen's father told NBC News that the incident "has nothing to do with religion" and that it may have instead have been motivated by homophobia. He said that Mateen had been enraged by two men kissing in Miami a couple of months prior. Patrons at Pulse, the nightclub where the massacre took place, come primarily from the LGBTQ community.

Yet soon after Mateen's name was realised, people were already pouncing on it – and on how it might help Trump.

In this regard of course, the Islamic State isn't waiting around for confirmation either it seems. Supporters are already holding up Mateen as an idol.

Either way, the scale of the massacre is horrific: One man was able to walk into a nightclub with an assault rifle and open fire, killing at least 50 and injuring 53 more. The complex mix of narratives that go into this incident – Islamic terror, Islamophobia, homophobia and gun control laws – coupled with the messiness of the American campaign season ensure that Trump's disgraceful tweet is likely to only be the first bit of nastiness to emerge from a horrible tragedy.