Chaim87: To answer, “But my question is why not a yom tefila in Manhatan?” — From listening to the RY’s shiur, I would say the reason they are not doing it now – is because of the tremendous danger of amassing so many yidden in one area – and now the predicament of hate among the non-Jews toward the Jews is more than it was ever before. Plus, over 7 million crossed the border illegally since Biden took office. There is a major risk of terrorism, because some of those illegal immigrants are from Iran, Lebanon, Syria, Yemen, etc. and they could be Hamas/ISIS/Jihad sleeper cells.
I am sure in his minyan they recite tehilim daily posuk by posuk with intensity and long-winded with kavana and zaakah gedolah – and that’s what he is asking klal yisroel to do.