Bikers in California and a fight in Senegal: how to detect fake videos online (22/3/2025)

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00:00Are these bikers on their way to deal with Venezuelan street gangs?

00:27This video emerged during the 2024 election in the US, suggesting that members of the

00:32Hells Angels and Mongols biker gangs were heading to Colorado to deal with supposed

00:37illegal Venezuelan gangs.

00:39But is that really what the video shows?

00:45To find out, use a reverse image search.

00:50You can do it in just three clicks.

00:52First, make a screenshot.

00:55Then upload the screenshot to a search engine like Google or Yandex.

01:00That will help you find the original context.

01:03In this case, an article on an Australian website about a biker rally in Australia.

01:10It's the same video with the same details.

01:18The video has just been resized and inverted.

01:23This video has nothing to do with the United States, and no bikers went up against a Venezuelan

01:29gang.

01:30Do a reverse image search on your computer by installing the InVid WeVerify plugin.

01:36The plugin splits the video into frameshots, then searches multiple search engines in just

01:42one click.

01:45Or use Google's Fact Check Explorer to find whether an image has already been fact-checked.

01:52Remember, before you share a photo or video, verify its origin.

02:01Geo-guessing has become a game online.

02:16But geolocating an image is also a critical technique in fact-checking information.

02:25For example, an account on TikTok said this video was filmed in New York in September 2023.

02:33But watch out.

02:35Whenever there's a natural disaster, old videos regularly resurface, taken out of their original

02:42context.

02:43This same video has been used to show floods in Brazil, in the UK, and in Dubai.

02:51To geolocate it, look for visual clues.

02:56In this case, the video has been inverted.

02:59If you flip it back again, you can see the phone number of a store.

03:04A Google search leads to a Turkish Instagram account, which shows that the store is located

03:09in Istanbul.

03:12Same thing with this shopfront, which will lead us to the exact spot where the video was filmed.

03:19Going on Google Street View, we find ourselves in this street in Istanbul, with all the same

03:26stores.

03:29The video was filmed in September 2023, when Istanbul was suffering torrential downpours.

03:35It was not in New York, and not in Dubai.

03:50More and more photos and videos online are generated by artificial intelligence, or AI.

03:56It's getting harder and harder to tell what is real and what is generated by AI.

04:01Here are some tips.

04:05Imagine you're looking for information about the fires in Los Angeles in January 2025.

04:11You come across this spectacular image.

04:13The famous Hollywood sign on fire.

04:17But if you look closer, you'll see something is wrong.

04:22The famous word Hollywood is misspelled with two Ds.

04:26There's another detail in the bottom right of the screen.

04:29You can see the logo of Grok, the AI tool developed by X.

04:34Like other AI tools, Grok puts its logo on images it generates.

04:39Here's another example.

04:41This video supposedly shows a fight between the president of Senegal and his predecessor

04:45at a summit in Nigeria.

04:47But it is a deep fake, a video created by AI.

04:52Take a look in slow motion.

04:54You can see that the president has three right hands.

04:58AI tools often have problems with human hands.

05:02Another way of checking whether an image is generated by AI is to check the original context

05:07of the event.

05:08Using a reverse image search, you can find the first image of the video in an article.

05:13The meeting took place in Senegal, not in Nigeria.

05:17And the Senegal president's office said it was courteous.

05:23Here are some more tips for detecting images that are generated by AI.

05:27Watch out for spelling errors, for instance, in road signs.

05:31The French city is spelled M-A-R-S-E-I-L-L-E.

05:36Look closely at the background.

05:38Here you see people with no eyes and no nose.

05:42Be careful of images that seem too perfect.

05:46AI-generated images like this are sometimes used to scam people.

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