Bengaluru Kannada protests: Why English is a touchy topic in India's Silicon Valley

In the run-up to the New Year, the southern city of Bengaluru (formerly Bangalore) - often called India's Silicon Valley for being home to global information-technology (IT) majors - hit the headlines after protesters tore down English billboards, demanding that they be written in the city's local language, Kannada.

The Karnataka Rakshana Vedike's (KRV) protest was to coerce the government to implement a law which mandates that 60% of each display sign in the city should have Kannada.

KRV got some support from India's main political parties which condemned the violence but said there was no harm in demanding Kannada signages. A federal minister of the governing Bharatiya Janata Party (BJP) told a local news channel, "What is the harm in writing in Kannada, apart from English? This is not England".

None of this came as a surprise because in India - home to more than 300 languages - assertion of linguistic identities is common. For instance, pro-Tamil language protesters in Karnataka's neighbouring state Tamil Nadu have used the slogan "Tamil Nadu is for Tamils" since the 1930s.

After India won its independence in 1947, several states in the country were formed along linguistic lines by grouping together regions which spoke the same language. Karnataka was one such state formed in 1956.

KRV, which tore down the English billboards last month, has been claiming for decades that Kannada and its speakers have been relegated to the margins in the cosmopolitan city where people from across the country, and the world, work and live. In Bengaluru, four out of 10 people come from outside the city, reports say, although two-thirds of this population come from within the state.

While the influx of migrants has made some local people