Just days after 20 Indian soldiers were killed in a brutal clash with Chinese troops on the Himalayan border in June, a group of food delivery drivers in the eastern city of Kolkata found a way to express their outrage.

In front of a banner showing photographs of the slain soldiers, the drivers burnt the red uniforms used by Zomato, the Chinese-backed food delivery start-up they worked for. “Indian army soldiers have been killed, but Zomato loves China,” they chanted as flames engulfed the company’s logos.

The protest exemplified the way in which a burst of nationalist anger that followed the border clash has been directed at the billions of dollars of Chinese investment into India’s tech sector.