Veerender Jubbal has received strong support from various quarters including Sikh rights groups which said it is "disgusting" to see "how Sikhs become targets of hate."
In a statement to the rights group Sikh Coalition, Jubbal described his doctored photograph as a "despicable action," which was then quickly made worse when some international news outlets which decided to share the image as truth.
An old photograph of Jubbal holding an iPad was doctored to add what appears to be a suicide bomb vest. The iPad in the photograph was changed to look like a Quran.
The doctored photograph was posted on social media, and immediately went viral. It was subsequently published by several European media outlets including La Razon in Spain which has since apologised and SkyTG24 in Italy.
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"By Photoshopping an image of a Sikh man to depict him as a terrorist, and worse, amplifying it through social and print media in the guise of legitimate news, an entire group of people are subjected to discrimination and hate violence," Arnhold Global Health Institute Director at the Icahn School of Medicine at Mount Sinai Prabhjot Singhtold NBC News.
The Sikh Coalition tweeted "viral photo of Sikh selfie doctored to look like Paris ISIS terrorist. How Sikhs become targets of hate. Disgusted."
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Passengers surrounding Alam and Anand started making racist comments and clutching their children "as if something was going to happen," the suit charges.
When the group asked the agent whether their appearance had contributed to their removal, "being that they are dark- skinned and had beards," the agent responded that their appearance "did not help," the lawsuit said.
The four men are seeking damages, alleging the airline "disgracefully engaged in the discrimination ... Based on their perceived race, colour, ethnicity, alienage and/or national origin," the lawsuit reads.
The flight was operated by Republic Airways, a regional partner of American Airlines.
A spokesman for Republic Airways declined to comment on the suit. American Airlines is reviewing the lawsuit, according to spokeswoman Victoria Lupica.