Ccmixter.org have a ton. Also soundcloud. Aside that the usual ways like Youtube.Also keep an eye for remix contests. Plenty of good vocals from a few well know projects/bands for free ,a chance to get featured and earn some $ or other prizes. Source: about 1 year ago

Find some fitting music to use in your videos. Source: almost 2 years ago

Creative commons remix community (some are non-commercial): ccmixter.org/. Source: almost 2 years ago

For Free and non-copyrighted samples: CCmixter and Freesound. Lots of good stuff there. Source: about 2 years ago

Http://ccmixter.org/ tons of music with a variety of creative commons licenses. Source: about 3 years ago

Can I interest you in a website with a whole bunch of increasingly ridiculous trolley problems? Source: 11 months ago

Maybe test yourself here first before you answer: Absurd Trolley Problems. Source: 11 months ago

You might enjoy this if you have't encountered it yet. Source: 11 months ago

I'm confused about what 'considered morally fine' would even mean here because people who agree on what is generally the right or wrong thing still do make exceptions when presented with a moral dilemma. Like, I can agree no one is entitled to other people's politeness, yet at the same time that being nice is 'the right thing to do', because people don't need a defense for being nice. If I asked "Should it be... Source: 11 months ago

Not the exact one here but a version you can play: https://neal.fun/absurd-trolley-problems/. Source: about 1 year ago