bitcoin like a fiat currency can be good or bad depends on how it is being used, it can be very good tool if been used to help the needy or the provide the needs of one's family but can be bad if been used to buy drugs and been used to finance those terrorist acts.
Yes i agree, very much like fiat currency, Bitcoin can be used for bad or good. Since we discussing on whether it "Can be used for Good", i'll give a couple of examples i've seen in current events that have occured. Some Charities have risen across the globe that offer supplies and relief support for country that experience natural disasters; and some offering food to orphans.