Donald Trump Jr receives backlash after he blasts London Mayor for his 'response' to the London terror attack

After yesterday's terror attack in London, US First son, Donald Trump Jr reacted negatively when he read the headline and shared an Independent article titled: Sadiq Khan: 'London mayor says terror attacks 'part and parcel' of living in a major city.' .He tweeted:
“You have to be kidding me?!” “Terror attacks are part of living in big city, says London Mayor Sadiq Khan.”

The only problem is this article was written in September of last year about Mr. Khan’s reaction to the bombing in New York City. The article was a plea from the Mayor for Londoners to be vigilant to the dangers of living in a big city.
The Mayor told the Evening Standard that he had many 'sleepless nights' after a bombing in New York last year, and said that London needs to be prepared for these kinds of attacks.  He added:

"That means being vigilant, having a police force that is in touch with communities, it means the security services being ready, but it also means exchanging ideas and best practice."

A lot twitter users blasted Trump Jr. for reacting on just the headline of the article before reading the whole article.