No. It shows dangerously violent people that we will remove any and all threats to innocent people. Note the word 'innocent' people, something they are not.
Okay. Lets take a country that implements Execution for major crimes: Zimbabwe. One a scale from one to African Dictator, how corrupt or dangerous do you think Zimbabwe is?
Also what you just said is anotger iteration of: To make it safe for people and set an example to not kill people we will kill them