"We need to make sure we compete in a more effective media world, but we also need to hold ourselves to account", he said.
The UK government also imposed a temporary restriction on its own Google ads including public appeals and blood donation campaigns.
It is reported that YouTube accounts posting extremist content, including that of former Ku Klux Klan member David Duke, could have made around £250,000 from the ads placed alongside their videos.
Vodafone is also believed to be considering a similar move, while a spokesman for Sky said it was "clearly unacceptable for ads to be appearing alongside inappropriate content". "Although spending by advertisers who have announced their intention to suspend spending on YouTube and other Google properties is relatively small so far, we think that awareness of the incident will marginally curtail global growth this year versus prior expectations". Brands like Marks & Spencer, McDonald's United Kingdom, and Lloyds are namely the few brands who have stopped advertising their products on Google-owned sites.
On Tuesday, the Home Affairs Select Committee summoned bosses from Google, Facebook and Twitter, to question them about the action the web giants were taking to remove hate speech from their platforms.
Midwest Region Free Pick: Oklahoma St. vs. MI
The star guard missed a critical front end of a 1-and-1, and Walton made it hurt with a conversion in the lane for an 86-79 lead. This is the third time this season MSU and Kansas have been at the same neutral site and the first time they've met.
He added: "We accept that we don't always get it right, and that sometimes, ads appear where they should not".
The company said it would make changes to its policies and brand controls for advertisers.
"Whilst we have those discussions, all advertising through this channel has been removed with immediate effect".
"Google is responsible for ensuring the high standards applied to government advertising are adhered to and that adverts do not appear alongside inappropriate content". These platforms, the authorities maintain, can and should do significantly more than they already are, whereas Google et al admit (partial) culpability and swear they'll try harder.
In the United Kingdom, a committee of MPs has meanwhile demanded that Google explain how government adverts have appeared on "inappropriate and hate-filled sites" and whether the government and advertisers will be refunded payments made to the USA tech giant. This meant reviewing the practice of placing ads against newly-uploaded YouTube content, before it has been classified, ISBA said.