To be pro-life means to be pro-eternal life. Tradition demands the greatest possible reverence towards the Holy Eucharist. We must insist that Our Lord has the right to be received in the most reverent manner possible.
Catholics who receive Communion on the tongue don't do so out of some false piety or holier-than-thou attitude. Receiving Christ on the tongue while kneeling reinforces reverence for Our Eucharistic Lord.