This gesture has come into widespread use, often leaving bishops and pastors at a loss as to how to reverse the situation. For individuals, I would recommend closed eyes and a prayerful posture as sufficient response, rather than belligerence. Most laity, and probably many priests, are blind to the liturgical significance of interrupting the flow of the Mass in this way. It is not necessary to lose one’s peace over this or be an irritation to others. Some proportion is required. If asked why you don’t participate, simply, plainly and charitably tell the questioner of your discovery. If some chance of changing the practice is possible talk to the pastor or work with other laity through the parish council. You can also write the bishop, as is your right in the case of any liturgical abuse not resolved at the parish level. If your judgment is that no change is possible then I believe you are excused from further fraternal correction.