A 7-year-old girl was also injured and was in serious condition.
One person was reportedly injured as people scrambled to get inside the church for cover.
Painters of icons hope that recent gift to King Charles III will lead to more recognition of suffering in Ukraine.
"Hungary as a Christian country is responsible for persecuted Christians."
The organisation is involved in numerous controversial activities involving teenagers among others.
Fr. Kiely already announces the inauguration of the next one, which will take place in a church in Worcester, Massachusetts.
Amy Gallagher has spent more than £20,000 in her training to become a psychotherapist.
There have been many other reported cases of Christian preachers being confronted in England.
Recent similiar examples show that freedom of speech and freedom of religion are under threat in Great Britain.