Pavone is an extremist. As the election was approaching, Pavone vested in alb and stole, proceeded to an altar with lit candles, and placed on the altar the body of an aborted fetus.  He posted this video as an endorsement of Trump. (He subsequently removed the video in which he was vested and posted a second version in which he appears in a clerical suit. The second version is still available on YouTube; I don't think the first is.) Pavone has had a troubled relationship with church authorities, but is currently (or at least he was in November 2016) a priest of the Diocese of Amarillo. After Pavone desecrated an altar to make a political endorsement, the diocese opened a canonical investigation. (See: http://www.ncregister.com/daily-news/father-pavone-faces-diocesan-investigation-over-aborted-baby-on-altar.) I don't know what conclusion, if any, the investigation reached.
Pavone is an embarrassment for the pro-life movement, and Priests for Life is an embarrassment for the church.