Think about it. They defeated the greatest power in the world in a couple days. Walked right over us. And these were only the first. They'll keep coming. This is not a war any more than there's a war between men and maggots... This is an extermination.
~ Ogilvy
I'm dead set on living.
~ Ogilvy
You and me. I don't think we're on the same page.
~ Ogilvy

Harlan Ogilvy is a character of the box-office hit War of the Worlds by Steven Spielberg. He's a character only in the movie and not in H.G. Well's book. He's not an antagonist but his mental breakdown showed the protagonist trouble, which eventually getting himself killed in the process.

Harlan Ogilvy is a former soldier and artillery man. During the Martian invasion his family was killed during the alien's arrival and vows revenge. He offers shelter to Ray Ferrier and his daughter and recruits them to his so-called resistance. He tells Ray that there will be more of them and they will build "an army from underground to attack them under their feet, just like what they did to us".

During the night some aliens came to their basement. Ogilvy tries to shoot one of them with his shotgun but Ray interferes and stops him. He then witnesses the tripods using human blood as a fertilizer to a red weed, causing him to have mental breakdown. He then starts to whine and sobs that might get the alien's attention. So Ray steps in and killed him.