Here is a more accurate version:
First they came for the communists,
I did not speak out
because I was not a communist.
When they came for the social democrats,
I did not speak out
because I was not a social democrat.
When they came for the trade unionists
I did not speak out...
First they came for the Jews
and I did not speak out
because I was not a Jew.
Then they came for the Communists
and I did not speak out
because I was not a Communist.
Then they came for the trade unionists
and I did not speak out
because I was not a trade unionist.
Then they came for me...
If a terrorist saw police wouldnt he blow himself up immediately so he could kill the police as well?
For the police to be able to shoot him in the head 5 times, they have to be pretty close. More than enough to get hit by the explosives that a terrorist could carry.
The situation was...
Regardless of the justification, the killing of another human being is essentially wrong.
That said, when it becomes necessary, what is important is effectiveness.