Pagan Idolatry In US Catholic Church - What Will YOU Do???

At St Denis Church in Diamond Bar CA, an immense sacrilege happened during the evening Mass for the Feast of Our Lady of Guadalupe, obviously with the authorization of the parish priest.  After the homily and before the offertory, a troupe of pagan dancers performed a dance that can only be called sacrilegious idolatry.  The parish of St Denis seemed to think nothing amiss about this, having posted the video below to their Facebook page.  They seemed to have trouble with their sound system, and perhaps that is just as well.  The pagans actually started off that Mass at the 13:00 mark with an introductory ritual.

If you know anything of Our Lady of Guadalupe, you'll know that she aided greatly in the conversion of the Aztecs and other native American tribes, delivering them from the very same pagan practices that were celebrated at this Mass.  Somehow the phrase "the dog returns to its vomit" seems most appropriate here.  There is a more complete analysis of this debacle at Complicit Clergy.  Meanwhile, the Traditional Latin Mass is banished to the hinterlands while idolatry is celebrated during Mass.

I am equally appalled by the behavior of the congregation.  In the video, you see them applauding that dance of idolatry.  Some of them look like they are old enough to know better than that.  Can their own faith in Our Lord be so compromised that they actually approve of this idolatry during Holy Mass?  Or could it be that they are simply going along to get along, because they are cowards too afraid to stand up for Jesus in His Church?

Now the question is "what will we do when this happens in our parishes?"  Not "if", but "when".  I remind you that this isn't happening in some third-world backwater.  That happened a few days ago in the United States.  Will we laypeople have the conviction and courage needed to drive the filth out of our churches (as Jesus cleansed the temple), should someone dare place it there?  Or will we just sit on our hands, stew about it and then complain on social media afterwards?  As Bishop Strickland said a few weeks ago, what will it take for us to act?