I don't think that disagreeing over doctrine is making enemies of each other.
Look at the words you are using towards the Catholics.
We can still be diametrically opposed doctrinally, but still have our unity based on our faith in Christ.
I am not going to go along with diametrically, but brotherly love and unity is important.
According to the Bible, idolatry is one of the works of the flesh that will keep a person out of the kingdom of God. That means that every single person who kneels and prays to statues of Mary and Christ is an unrepentant idolater and will be condemned at the judgment. This is because it is a violation of the 2nd Commandment that says not to make any graven or false image and bow down and worship it, and statues of Mary and Christ are false images and many bow down and worship them.
Therefore if I lift up my voice in obedience to what Ezekiel said, as a watchman when the enemy threatens, I am doing the right thing by warning people of the danger they are in. If I saw a person having breakfast on the upstairs balcony of his house and saw that there was a raging fire downstairs, I would be amiss if I didn't shout a warning to him. But if he didn't believe that there was any danger, he would abuse me and order me off his property.
People who are deceived by false doctrine don't know they are deceived. The people who bow down and worship statues of Mary, of Christ, and the ceremonial container of the host, are not aware that they are committing idolatry, and of the danger they are in, and that is why I am getting abused for giving the warning.
But I can't make a person become undeceived, and if they don't listen to my warning, then their blood is on their own heads.
You will also see in Jeremiah 4 that worshiping the Queen of Heaven, a pagan goddess, is a total abomination to God and He promises severe judgment on those who do that; yet there are people who are worshiping the Queen of Heaven regularly and yet I am abused for warning people that the practice is totally pagan.
Oh well, I'm fortunate. The idolatrous Israelites killed the prophets who tried to warn them of the wrath to come. But the Scripture says that anyone who lives godly in Christ will suffer persecution, and being abused for warning people against idolatry and paganism is part of the territory.