There was one such incident in Australia.

On New Years Day 1915, an Afghan or possibly British Indian man by the name of Mullah Abdullah and an Afghan man by the name of Gool Mahomed, opened fire from an ice cream cart flying a home-made Ottoman flag on a train that had just left the town of Broken Hill to Silverton with around 1,200 men, women and children making their way to the annual Manchester Unity Order of Oddfellows picnic. 4 people were killed and seven people were injured. The two men were shot dead by a posse consisting of civilians, police and members of the local rifle club.

But why?

Mullah Abdullah, whose origins has yet to be established, came to Australia in the 1890s. He, like many other Afghans (including Gool Mahomed), came to Australia to work as a cameleer. Afghan cameleers played a very important role in opening up the Australian interior for exploration and colonization. For transportation, the camels in the Australian outback was vital and the men who were responsible for them became even more so.

These men, often referred locally as Ghans, settled all over Australia and founded so-called ghantowns (makeshift camps). However, just like the Australian Aboriginals, they were not and could not be recognized as Australian citizens and hence had no real claim to the land they inhabited. As technology progressed and the car came to play an increasingly important part in everyday life, the camel fell to the wayside and the men who had once earned a daily wage as cameleers now found themselves without a job. Gool Mahomed took a job as an ice-cream vendor. Mullah Abdullah served as an imam and as a halal butcher. As the economy became tougher and men had to do with being day laborers at best, most found themselves living in poverty in the outskirts of towns such as Broken Hill.

The Immigration Restriction Act of 1901 was a prime example of the increasing amount of government, as well as social, racism that these men had to increasingly deal with, in combination with economical marginalisation and segregation. The ghantowns were commonly segregated from white Australians. In 1901, white Australians from Broken Hill wrote to the Wilcannia Municipal Council that "it [the nearby ghantown] presented a danger to the morals of the community, while the camels were a danger to horses and horse-users.", a typical example of the men and their animals were seen by white Australians. The Afghans didn't escape being discriminated by the media either; the few white women who married Afghans were met with distrust and dismay, in one Australian newspaper you'd find lines such as life as a Mohammedan wife will mean degradation and servitude.... Among Mohammedans women are regarded as a very inferior being.... Slavery is a mild term to describe the life of the average Mohammedan woman.

As the years went on and increasingly met with racial prejudice, economic and social marginalisation, there seemed to be no proper place for these men and their animals in Australia anymore.

Then came 1914 and the entry of the Ottoman Empire into World War I. The Ottoman sultan Mehmed V formally declared a jihad against the enemies of the Ottoman Empire in November 1914. When the news reached Australia, it shocked the Afghan community. The Ottoman sultan was their spiritual leader as well as the protector of the holy places of Islam. The fact that Australia was now fighting against the Ottoman Empire was not taken lightly by the Afghans. It led to a rise in anti-Muslim sentiment amongst white Australians. For Mullah Abdullah and Gool Mahomed, it was the last straw. Their suicide notes would later explain their reasons for going on a suicide mission, which included all the elements which I've previously mentioned. Since the men couldn't and weren't allowed to identify with Australia and their culture, they had to turn to the Ottoman sultan and fight his enemies in their immediate midst.

Disillusioned, the men made their plans, they made a home-made Ottoman flag, used Gool Mahomed's ice-cream cart to carry their weapons to the ambush site and prepared their suicide notes.

To quote historian Peter Scriver, the Broken Hill attacks were a "rare but tragic exception to the generally civil relations the Afghans had previously maintained with the white majority". While this was to be the only "engagement" of WWI on Australian soil, the historical context of the Afghans in Australia is vital to understanding why this event happened as it did.

Sources:

Mosques, Ghantowns and Cameleers in the Settlement History of Colonial Australia by Peter Scriver in Fabrications: The Journal of the Society of Architectural Historians, Australia and New Zealand (2004), vol. 13, no. 2, p. 19.

Muslims in a ‘White Australia’: Colour or Religion? by Nahid Kabir in Immigrants & Minorities (2006), vol. 24, no. 2, p. 193-223.

Mahomed, Gool Badsha (1875–1915) by Christine Stevens in Australian Dictionary of Biography (Australian National University, 2005)

For anyone who wants to listen instead of reading, I'd recommend BBC World Service's two part documentary Australian's Afghan Cameleers which is available for download online.