You miss the greater point, which is that Calvin is not the only source of Reformed doctrine, nor do we parrot Calvin. We, like he, turn to the Scriptures! Which of the 5 points of the Calvinistic TULIP did Calvin write?
What you might want to study a bit is the way that the Church, under Catholicism, turned away from the Scriptures, building on the teachings of one Father of the Church after another -- each in succession assuming that those who came before them had actually exegeted the Scriptures to arrive at their point. By the time of the Reformation, the RCC had drifted so far away from Scripture as to be heretical and unrecognizable as biblical Christianity.
That was, in large part, cured by men like Luther ("Reformed"), Calvin ("Reformed") and others. In the line of Catholicism, the last "Father" who was even close to the Scriptures was Augustine, who was also "Reformed" in the way he saw the doctrine of grace and God's sovereignty.
You really gain nothing by promulgating straw man (and patently false) arguments that you gather from certain IFB websites.
Additionally, do you realize that Calvin was not JUST the pastor of the church in Geneva... He was also the political leader of the city, akin to a mayor or governor today. In following the laws of his land, he came up against ONE individual who, by those laws, was condemned to death. It was not as if he ran out and just murdered everyone who disagreed with him. Get the story right by reading ACTUAL history instead of those weird and false web sites.