Why would the Latin mass be targeted?
Catholics who favor Tradition in general, whether they attend the Mass according to the Roman Rite in Latin according to the 1962 Missal or Roman Rite without Latin according to the 1970 Missal generally have larger families, very traditional on marriage and family, more likely to to question the gender ideology that has been pushed at Schools. I suspect some of those parents at those school board meetings in Virginia and other states questioning the whole gender/transgender movement being pushed on elementary kids were from Traditional Catholic parishes.
I think all of the issues from the DOJ targeting parents who came to the school boards to protest the transgender ideology advocates is correlated with the Traditionalist Catholic Parishes, etc. Just my hunch.