The Irish artist said he wanted to humanise the victims.
"We have a serious commitment to peace and security in the western Pacific."
We are willing to defend ourselves without any questions."
He read out a statement apologising for what happened as police took him away from his residence.
Christa Avery and her husband Matthew O’Kane were refused permission to leave Myanmar last month.
"They are killing us like birds or chickens, even in our homes."
Families were separated when a huge fire swept through the world's biggest refugee settlement.
"The fire spread so quickly that before we understood what happened, it caught our house."
The Philippines said the vessels were a concern due to "possible overfishing and destruction of the marine environment".