Many times so-called Christians become arrogant church members. They think that because Jesus died on the cross for their sins that they are free to slander and to criticize others in church at will. This tendency is particularly bad in democratic countries like the United States, because we are used to being able to openly criticize our leaders. But as the Apostle Paul writes in the book of I Corinthians, church leaders have power to discipline churchgoers who are causing disturbances in the church:
Some of you have become arrogant, as if I were not coming to you. 19 But I will come to you very soon, if the Lord is willing, and then I will find out not only how these arrogant people are talking, but what power they have. 20 For the kingdom of God is not a matter of talk but of power. 21 What do you prefer? Shall I come to you with a rod of discipline, or shall I come in love and with a gentle spirit? (I Corinthians 4:18-20)
Church leaders have a mandate from God to treat members of their flock with love and with a gentle spirit or to discipline them depending on whether or not they are behaving. Some American churchgoers think that they are free to do whatever they like in church, criticizing and bashing the minister at will. And then, if the minister tries to do anything about it, they are free to leave.
But actually, those who are teaching you and leading you have authority over you. They are not just using powerless words when they exhort your to repent, for the kingdom of God is not a matter of talk but of power. The brother who lovingly and discretely approaches you about your sin is doing God’s work towards you, and you had better respond appropriately! If you publicly lash out at your minister or someone else for approaching you discretely about your sin, then you are sinning against the whole church which Jesus died for. Your public outbursts of wrath, the slander you have been spreading, your refusal to talk to others, your self righteous behavior, will all be judged some day by God, who has the power to do with you as He will. Therefore we need to treat each other with love, dignity, compassion, and patience, especially if they are the leaders that God has set over us.
No, you are not free to behave how ever you want in church.