Part 2

Archbishop Lefebvre wrote in Religious Liberty Questioned: 

all of this is based on the Church's fundamental principles, on the fact that the Church is truth, the only truth. This is the way it is; you either believe it or you don't, of course, but when you believe, then you have to draw the consequences. That is why, personally, I do not believe that the declarations of the Council on liberty of conscience, liberty of thought, and liberty of religion can be compatible with what the popes taught in the past. Therefore we have to choose. Either we choose what the popes have taught for centuries and we choose the Church or we choose what was said by the Council. But we cannot choose both at the same time since they are contradictory. 

Nope, the schismatic Lefebvre rejected Dignitatis Humanae. He was right about one thing, however: DH flatly contradicts what Pius IX said about freedom of religion.