Singaporeans have no problem with our Indians neighbors. We have no problem with Malaysian Indian staying in Singapore.
Singaporean Indians are predominantly derived from the lower caste Indians. Their ancestors are victims of racism/casteism in India. In Singapore no one discriminates them. But many feel angry that they got discriminated by the recent wave of new comer India Indians, who are mostly higher caste.
This man spoke out against the construction workers, which are majority lower caste South Asians. Singaporeans have finally form a fledgling common identity, and we start to see ourselves as one people -- to the chagrin of PAP government.