Why are modern women are becoming more aggressive?

Why are modern women are becoming more aggressive?
"For relaxation, Jo Scott loves nothing more than curling up with a good novel.
Attentive to her health, she makes sure she swims regularly and eats well.
Cosy nights in with her beloved partner are sacrosanct.
So seemingly serene is the 51-year-old that she even soothes others in the course of her career as a reiki therapist.
But, like an increasing number of respectable women, Jo has become so consumed by rage that even a simple trip to buy the weekly groceries can lead to frighteningly aggressive outbursts. 
Recently, she completely 'lost it' when another driver tried to take the space she wanted in a Tesco car park.
Jo's response was instant, and utterly disproportionate.
'I was there first. So I got out of my car as he approached and shouted: 'F*** you, a*******, I'm staying here until I get this space.'
Jo Scott, 51, from Sussex, has become so consumed by rage that even a simple trip to buy the weekly groceries can lead to frighteningly aggressive outbursts
...Once I'm riled it's as if a switch is pressed and my temper turns me into a completely different person,' says Jo.
'I swear, slam doors, shout and throw things.'
Worryingly, it would seem this is a dangerous trend, seen by many as yet another dark side of equality.
Stories of professional women drinking themselves into ill health, trying to keep up with male colleagues are well documented.
But they are now matching men on the aggression front, too, putting themselves in physical danger — risking their good name, career prospects and relationships. 
In 1957, men were responsible for 11 violent offences for every one perpetrated by a woman — today, that is four to one..."
Read on!