The fact it formed the central theme of today's sermon tells you everything you need to know about the Traditional Latin Mass, @Seidenspinner :D
Father was, putting it mildly, visibly angry when discussint the incident because a.) The Mass had been interrupted. b.) A loud, disrepectful mob profaned the sanctity of a Church with their presence and irreverant behavior. c.) They were doing so to support abortion which, as Father rightly pointed out, is one of the devil's main weapons for destroying both the human soul's communion with God and human life in general.
It takes a lot to anger Father. The election scam irritated him, but he preached patience and prayer. Dark times strenghthen our Faith. But this... this angered him and an angry traditionalist priest is terrifying force. Just as he's a reflection of God's forgiveness and grace, in a situation like this he's also a reflection of God's wrath.

Le diable a recruté du personnel ses dernières années; cela va devenir chaud !
youtube.com/watch?v=I2mvpVtgr08
Prions souvent la prière à St Michel !