Every human being has the right to respected for his or her own merits or demerits. Respect their personal right to live according to their preference or submission to their faith. No one should be condemned for choosing a life path even if it something you disapprove. We are not here to condemn but to understand and let the sinners as you say be the responsibility of God. Our task is to prevent more chaos and conflict in this universe. Only kindness can do that.