NEW ORLEANS — The terror attack in New Zealand; the killings of Jewish worshipers at a synagogue in Pittsburgh last year; the massacre at a black church in Charleston in 2015. 

All of those brutal crimes have one thing in common - the men who orchestrated those attacks reportedly promoted white supremacist propaganda. 

It's a trend that horrifies Anti-Defamation League Regional Director Aaron Ahlquist. 

"Especially with the proliferation of hate and extremism through social media, it's transcending national boundaries. It's a global threat," Ahlquist said. 

Newly-released data from the Anti-Defamation League shows white supremacist propaganda increased 182 percent in 2018, with 1,187 distributions across the U.S. That's up from 421 total incidents reported in 2017. 

Here in Louisiana, Eyewitness News reported about hate messages spray painted at a synagogue in Mandeville. 

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"We're also seeing the direct tie between white supremacy and violence and violent murder. We looked at the data from 2018 and saw that more than three out of four of all extremist murders that are committed throughout the United States are committed by white supremacists, 78 percent," Ahlquist said. 

There are several people and groups that say they are fighting back. 

Men and women gathered Friday at Masjid ur-Rahim mosque during their Friday (Jumu'ah) prayer service. People from several faiths, Muslim, Jewish and Christian, all came together to say they are standing in solidarity with New Zealand. 

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"The shooter was bold, emboldened by what he believed was probably acceptability. We can't have that anymore," said Arnie Fielkow, CEO of the Jewish Federation. 

"It's a sign that we still have a lot of work to do, because the human being is still in darkness. And it's not really understanding that we're all one human family. That when you do something to harm one individual, you're doing it to the whole society," Imam Rafeeq Numan of Masjid ur-Rahim said. 

Reverend Melanie Morel-Ensminger with the Greater New Orleans Unitarian Univeralists says white supremacy, and the way it's spread, needs to be addressed now more than ever before. 

"White supremacy is our common enemy. White supremacy is death! It wants death for everything that is not part of white supremacy. The shooting in Christchurch, where I once served as Unitarian Minister, is just an example of this uprising of white supremacy globally and it's being enabled and entranced in by our current leadership. As a denomination we stand against white supremacy," Morel-Ensminger said.