Select the images that satisfy the prompt and read the result as braille:
Select all images with famos people.
If one presumes that "famous" is a Canadian spelling, then "famos" would be the American version; select only Americans.
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Resulting letter: G
Select all images with a /ɹæp/.
"/ɹæp/" is the phonetic transcription of the homophones "rap" and "wrap"; select either.
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Resulting letter: R
Select all images with a murder.
The collective noun for crows is a murder.
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Resulting letter: A
Select all images with a Mathcamp.
What campuses have hosted Mathcamp?
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Resulting letter: P
Select all images that roar.
A variety of contexts, from animals to crowds to Katy Perry's song.
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Resulting letter: P
Select all images with _tale.
Can it be followed by "tale"? E.g. STALE, FOLK TALE.
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Resulting letter: L
Select all images with a Steve.
Which of these people go by "Steve" in some contexts?
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Resulting letter: E
Select all images with a Noah.
Which of these people go by "Noah" in some contexts?
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Resulting letter: D
These letters spell the final answer, GRAPPLED.