Analyze the text, "he said he was protesting destruction of the ocean and river by ruthless greedheads."

The person, "He," does not want the "ruthless greedheads" to destroy the ocean. The "ruthless greedheads" must be people that the person doesn't like and they don't show any mercy. I have no idea what the context is but it seems to me like the person they are speaking of doesn't want the ocean to be destroyed. from what you asked, that's the best answer I can come up with.