I'm not bashing immigrants, just those particular immigrants who are provincial-minded and give no thought to the larger community and the integration of various believers in a new country (even among immigrants, if a Russian and a Greek live in the same place, why shouldn't they worship together?) This type of narrow provincialism shows unspeakable contempt for one of two things. Either it shows contempt for Orthodox Christianity itself, because if you truly think something is valuable, you'll be interested in spreading it, or it shows contempt for the members of the wider non-Orthodox community, because having something of value, these provincials show no concern for those who remain without it.
Narrow Provincialism, aye? Perhaps you have never thought about why immigrant congregations are they way they are. My grandparents all immigrated after WW2 (through Germany) to the States. When they first came here, they had just been through a horrific experience, one grandfather in particular. He'd spent 2 1/2 years in prisoner of war camps. He survived only through God's mercy, which by some miricle didn't send him back to the USSR during prisoner swaps, though his number did come up. He witnessed executions, beatings, starvation, all sorts of unimaginable human cruelty. Before that, in the USSR, he was considered worse than a second-class citizen, decending from 2 enemy-of-the-people classes, the aristocracy (through his mother) and the priesthood (his father). He was not allowed to persue an education, hold most jobs, etc. While in the POW camp, he and 2 friends regained their faith in God, and vowed to build a church once they were free. After a few years in DP (Displaced Persons) camps in Germany after the war, they all ended up immigrating to NYC. They kept their vow, one going so far as becoming the parish priest there (Fr. Serafim Slabatskoy, author of "Law of God," btw).
One of the main goals for them however when they started this church, where Church Slavonic is still used to this day, wasn't spreading Orthodoxy. At that time, they, and most if not all Russian immigrants & their religious leaders wanted a place for all Russian Orthodox who had immigrated to have something they had not been able to have in their homeland, some for most, or all of their lives, a place to worship like their forefathers did. At that time they were not thinking to spread Orthodoxy, they were thinking to preserve it as they knew it. The immigrant clergy had to re-educate the Russian immigration, as some did not even know how to cross themselves, due to the immense supression of religion in the USSR. Their focus was not on bringing light to the outside Americans, their focus was on rekindling the flame of faith inside themselves.
Now times have changed granted, BUT please please please, be a little more understanding of those that built those churches to begin with, most of who are in their 70s now, and their children, who try to preserve their heritage. Also, another food for thought... when new immigrants come here, they will be drawn most to a place where their own native language is spoken. Here in DC its much to often the clubs rather than the church, but those who do come are extremely glad to go somewhere where they can here their faith professed in their own native tongue.
So bottom line, be nice, most parishes try to compromise, and those who don't, will either eventually lose it's flock by default or have to depend heavily on incoming immigrants.
Hope this rant semi-makes sense.