Elliot Higgins of Bellingcat says vital evidence has been removed by the Google-owned platform.
'It's the most brutal thing I've seen in my life,' the pop star said in response to the threats.
The advert has caused a stir online with some calling it "weird" and others loving it.
The dog was found wandering around three miles away from the accident site.
Watch to be rolled out to a small group of users in the US first and then launched in other regions.
Want an easy way to kill mosquitoes? Just get yourself a large fan and a pitbull.
YouTube star Jack Jones issues sort of apology after racist and homophobic 'gotcha' video goes viral
"I'm sorry if I offended anyone with my choice of words."
The incident took place in Nakhon Nayok, a province northeast of Thailand's capital, Bangkok.
Creators can now hold comments with links for moderating before they can be seen.
Anyone searching for extremist content will be redirected to anti-terrorism videos.
The Slow Mo Guys YouTube channel blows the doors off.
YouTube channel ZombieGoBoom says it has lost up to 95% of its revenue from Google's screening algorithm.
The cyclist was arrested and charged over the shocking incident in Ottawa, Canada.
These firms have drawn fierce criticism earlier over extremist content and hate speech on their sites.
YouTube TV is expanding to additional 10 markets in a couple of weeks.
Electrochemical-powered autonomous potato can drive and steer itself.
Russian YouTube group 'Garage 54' splice three family cars together to make massive spinner.
Google is also working with Facebook, Microsoft and Twitter to develop technology to deal with online terrorism.
The heart-stopping clip shows rider performing tricks on top of Hong Kong building.
New counter-terrorism drive comes on the eve of talks between Theresa May and Emmanuel Macron.
Spark is a mini camera drone that follows you around, allowing you to take selfies using gestures alone.
Dallas Police claim Facebook Live and YouTube used as platforms to incite violence.
The proposals will be the first legislation at EU level targeting Facebook, Twitter and YouTube.
Mastanamma has more than 340,000 subscribers.
Danny Glass was arrested after a crash in Phuket that killed vlogger Sophie Emma Rose Anderson.
A cat trolled a sheep until it got headbutted into next week in a sweet piece of animal justice.
A preview version of the new look is now available to a small group of users.
Google, Twitter and Facebook may face prosecution for failing to tackle online terrorism, violence and child abuse.
'We would kindly ask DJs to refrain from using the Tube as a pop up club," said Transport Police.
The new change would help it determine the legitimacy of a channel, YouTube says.