The Eucharist is the litmus test

The most precious thing in the Catholic Church is the Eucharist.  Why?  Because it is God Himself.  It doesn't get any bigger than that.

As John Pacheco points out, a clergyman's behaviour towards the Eucharist is a good litmus test as to whether he is following the true Faith and the true Church.  

Do not trust clergymen who won't deny communion to pro-abortion politicians.  Do not trust clergymen who don't show proper reverence for the Eucharist.  They will invoke clever excuses, such as not wanting to be judgmental or harsh.  Don't buy it.  That's a cop-out.

If they won't stand up for something so fundamental and primordial as the Eucharist, you can rest assured that there are other errors in their teachings.  Be on your guard.

Similarly, make sure to affirm and encourage those faithful clergymen who devoutly worship and venerate Jesus Christ present in the Eucharist.  They are beacons of hope in world gone mad.  Support them and love them.  You have found a precious jewel.