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In a speech Thursday, Democratic presidential nominee Hillary Clinton accused her opponent Republican nominee Donald Trump of encouraging hate groups, saying he had built a campaign on prejudice and paranoia.

In southwestern Pennsylvania, seven organizations are identified as “hate groups,” according to the Southern Poverty Law Center's "Hate Map." They're defined as organizations that “have beliefs or practices that attack or malign an entire class of people, typically for their immutable characteristics.”

This week, actress and comedian Leslie Jones quit Twitter after receiving a barrage of targeted racist, sexist and otherwise abusive messages following the release of the all-female remake of Ghostbusters.

Twitter has permanently suspended conservative commentator Milo Yiannopoulos, saying that he subjected other users to targeted abuse. Yiannopoulos' suspension comes amid a recent campaign in which users tweeted hundreds of racist and abusive messages at Ghostbusters actress Leslie Jones.

It's a story as old as time. Man tweets as bookstore. Woman falls in love with his literary Pokemon jokes. The inevitable next chapter: marriage.

Wait. What?

It started in 2012. Jonathan O'Brien was running the social media accounts for a Waterstone's book store on Oxford Street in London.

He tweeted a couple of jokes about books and Pokemon.

It seems like social media is starting to touch every part of our lives, and now that includes the concert hall too.

The Carnegie Mellon University School of Music is experimenting with what they’re calling “Tweet Seats” this Sunday. They’re asking some concert-goers not to turn their cell phones off during the Philharmonic Chamber Orchestra’s performance of pieces by Ravel, Mozart, and Beethoven, with guest conductor Ian Hobson.