Every time there's a rally you think it's "manipulation", but if the market goes down then it's "not manipulation" ? Where are you getting these ideas ? Who is manipulating the market ? How are they doing it ? Are the big banks colluding with a secret $100B slush fund ? Is the SEC investigating ? Is there any scholarly research that supports your assertion ?
As I posted previously, individual stocks can be manipulated, but not the entire market. It's much too big. Unless your talking about market momentum and herd mentality which are big factors in market volatility, but can't be viewed as manipulation. Swing traders love the volatility, both up and down.