To wear the insignia of a group that openly and publicly denies the traditional moral teaching of the Church, that claims that the Church is in error, is regretable. To go to the altar of God with such an attitude is to receive the body of Christ unworthily. More than that, if possible, it is heresy, which is in its rawest sense is to substitute one's own opinion for that of the whole Church.
And yet, as I recently posted on another thread, many, many people, in my parish alone, proudly (the problem maybe?) and defiantly approach the altar every week as EEM's and educators and council members and parishioners, and I know this by their comments at the meetings and such. I know we are all sinners, yet they defiantly persist in heresy and approach, never realizing or wanting to hear of the sanctity of the sacrament. It's very sad, I don't know what the answer is, except for prayer.
It may be that one of these folks will receive Communion in a sincere manner, not just to make a political statement, but to receive the Lord. It may well be that as he receives Communion, he will suddenly experience guilt or regret as he realizes the nature and depth of his sin. Perhaps that will prompt him to leave his lifestyle. I am aware of an instance where this has happened, to someone I know.