It is easy to blame one without providing any concrete evidence (that the person being blammed is as bad as he is said). I think, if we say that some one has not done good or has not done what he/she was supposed to do, we better also provide proof supporting cliam or else it would be pretty much like Prachanda lying that some royalists are behind plots to kill foreigners and claiming that he has evidence of it, but eventually providing no proof and presenting himself as a big liar.