OBC - Other Backward Class [1]

BJP - Bharatiya Janata Party (the current ruling political party of India)

[1] https://en.wikipedia.org/wiki/Other_Backward_Class

OBC stands for "Other backward classes". It is a caste classification created by the Indian government based on certain criteria of people who are economically/educationally backward but who do not fall under the main backward class group (Scheduled Castes/Scheduled Tribes - SC/ST).

OBC: "Other backward class" https://en.wikipedia.org/wiki/Other_Backward_Class

BJP: Bharatiya Janata Party, which is the right wing Hindu nationalist party that is in power in India (of which Modi is a part of) https://en.wikipedia.org/wiki/Bharatiya_Janata_Party