Whitehouse.gov petition to ban HFT

i'm just curious-why now? all of sudden everyone is all over the place about this HFT. media,AG,SEC. why now,after this Lewis guy article?
where they have been 5 years ago? where they have been after flash crash? so-why now?

That particular case isn't even against a HFT firm. SEC just wants to be perceived as doing something.
 
Why HFT why now? Perhaps 'they' are testing the water on explaining the next 20% correction... They'll have to pick a sacrifical lamb or 2 to spook the market.
 
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