It depends on the writers. Most writers aren't that creative when envisioning what TK or TP is capable of, and they tend to take the easy way out showing levitation, flight, TK shields and etc. Most telekinetic abilities, in Marvel at least, happens the exact opposite way that some writershave indicated - generally a powerful telekinetic has to learn to hold back before they learn fine control because their powers tend to instant-crush everything around them based on their emotions. We've seen on multiple occasions that psychics who lack control don't need to back their attacks with any more effort than other energy users - when Rachel first learned of Jean's death, her psibolts took out every X-Man in the room, including Storm and Prof. X, while Jean has always had the ability to forge psychic rapports giving her a 'back door' into other's minds - that was her first display even though it usually takes time to establish that time of intimate connection.
Also, it's easier for an artist to draw an energy blaster doing something powerful than it is to show a high level psychic doing something without infodumping or explaining what they are doing.
Anyway, give any character an opening with morals off, and the majority of powerful energy manipulators have ways to insta-kill others.