Karate actually has the weakest kicks if you ever watch fight science. Tae Kwon Do has the kicks with the most raw power. It is a ridiculous difference too. A karate front kick is about 300 PSI, while a tae kwon do roundhouse can be 1800 PSI. Muay Thai, krav maga, and ninjutsu are the only ones designed to kill, and that needle in the neck to cause blood to rush to the head is actually from a movie, I forgot the name, it is not a real move.