the official name of the lowest castes (= social groups) in India, whose members are considered to have a lot of social disadvantages and can therefore be given special help by the government

Scheduled castes represent around 25% of the total population of India. 低种姓人口占到印度总人口数的百分之二十五左右。

At that time, it was considered demeaning to be associated with the scheduled castes. 在那时，和低种姓有关联被认为是有失身份的事。