Lol, this post is a load of shit.
The Clown phase started out in America by a PR company promoting Stephen Kings's "It" which is due for re-release next year, its funny all these reporting's started around exactly one year prior to the movies release date.
On top of that, yes someone could have been murdered with a baseball bat, people get murdered everyday it is by no means related to the "Killer Clowns"
People have tried this shit in the UK and have been beaten or chased away it wont take off here, you will just get a lot of people dressing up as clowns for Halloween tbh nothing more of it.
If you do see a clown, and it looks like he's holding something the chances are its fake, you have 2 options if you do feel in danger call 999 and ask for the Police explain what is happening and what you see, option 2 (my preferred method) grab a key, bat, chain, bottle chase the *** thats dressed up as a clown, when you catch him/her beat the fuck out of them then they will think twice about doing it again.