“At this time, in order to win this battle, we have to give priority to experts and scientific advice,” he said. One of the tweets removed from view was posted by Moloy Ghatak, a labor minister in the opposition-ruled West Bengal state, where Mr. Modi’s party hopes to make big gains in an ongoing election. Mr. Ghatak accused Mr. Modi of “mismanagement” and held him directly responsible for the deaths. His tweet included images of Mr. Modi and his election rallies beside those of the cremations and compared him to Nero, the Roman emperor, for choosing to hold political gatherings and exporting vaccines during a “health crisis.”