Syzygy is 100% right on 'grab first'. Even if you can't use them, you've got a 21st century 'scrapbook' of articles and videos. For personal use it's the smart play.
Also 100% right on the inference to NEVER trust a link or resource that you do not control. You may not have a choice, but serving yourself is the goal.
Don't use any of it without documented permission, and don't count on that. Some outlets recognize that their big story today is obsolete tomorrow, so if you express an interest in keeping it alive, everybody wins.
Other outlets are unbelievably full of themselves and NO is just automatic. Persistence, and getting to the right person, may help. However, outlets that take the position that what is theirs is theirs - even if your interest adds value - just can't be dealt with.
Choosing your language is a factor as well. Some outlets will only want you to link to them (bad for you). Most effective is a bit of 'vagueness'. Get permission to use the content, and try to side-step that you plan to serve it from a server/location that you control. Just get documented permission to use the content, and then proceed.
Don't forget follow-up 'appreciation', a non-existent courtesy these days. Thank you carries a lot of weight these days - people here it so seldom.