Because, janab-e-ali, india has a large number of indian population working through out the world who contribute to indian economy. By publicly not condemning israeli aggression, india stands a chance of isolation from other countries of the world (exactly what they are working for against Pakistanis) so this is a diplomatic thing india is excellent at. This situation cannot be compared with the US. And also many important members of US departments / ministries support the creation of israel so unless these members take initiative to condemn such acts, US cannot. The responsibility lies on the shoulders of those specific members.
And regarding right wing indians, tell me who is not a right wing indian in the present day india? No matter what they tell you on your face, the fact remains, they are munafiqs & all against the independent state of Pakistan. None of them is trustworthy. Especially the newer generation has the most intolerant & fascist views about Pakistan & Pakistanis. Talking out of personal experience here.