Silicon Valley success drives rift between classes

Angry slogans were spray-painted last month on walls, garages and a car in Silicon Valley. Now a widening income gap is sparking debate, frustration and even sporadic protests, writes Martha Mendoza

ARWIN BUDITOM guards some of the most successful high-tech firms in the US. Joseph Farfan keeps their heat, air and electric systems humming.

However, these workers and tens of thousands like them who help fuel Silicon Valley’s tech boom can’t even make ends meet anymore. Buditom rooms with his sister an hour’s drive from work. Farfan gets his groceries at a food pantry.