How can I legally use video clips for a project?

Question by : How can I legally use video clips for a project?
I have a few questions here and I am not tech savvy at ALL. I’m making a documentary for a national history day contest and
I want to know where I can find some video clips of hitler and such and use it legally (or else I’m gonna be disqualified)
How do I put the files in my movie?
Where do I get the files?
How do I do it legally?

Also I’m going to use iMovie to do the project if that helps anything.

Best answer:

Answer by Matt Anonymous
have you never seen an actual movie?… that’s what credits are… credit to the initial authors of the work, you think that paramount would be able to make iron man if they didnt give credit to marvel for dreaming him up in the first place?

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