Read your history. Not all inquisitions are violent and brutal. The two most infamous were established at the request of political leaders, the monarchs of Spain and Portugal.
Men seeking power will use almost any means to achieve it and any excuse to justify it. This was just one.
But ultimately, the Inquisition goes completely against the teachings of Christ and the Bible. There is no way that it can be laid at the feet of Christianity as it is not justified in any way, shape, or form by the teachings of the Bible.
Pathetic try on your part.
Right back at you!
Stalin killing millions for political advancement has nothing to do with Atheism, either. In fact, he might have believed that he was God.