When they say this they are being very deceptive. They are leaving out the most important part of the verse, which is “unless it be for murder or for spreading mischief in the land” Here it is in its entirety.
YUSUFALI: On that account: We ordained for the Children of Israel that if any one slew a person – unless it be for murder or for spreading mischief in the land– it would be as if he slew the whole people: and if any one saved a life, it would be as if he saved the life of the whole people. Then although there came to them Our messengers with clear signs, yet, even after that, many of them continued to commit excesses in the land.
Obviously “mischief in the land” is a very open statement, and “mischief” can be defined as almost anything.
3 a : action that annoys or irritates
As I said, this verse is a license to kill which is proven in this video. (Video from 2009)
Here are the possible punishments for “spreading mischief”.
YUSUFALI: The punishment of those who wage war against Allah and His Messenger, and strive with might and main for mischief through the land is: execution, or crucifixion, or the cutting off of hands and feet from opposite sides, or exile from the land: that is their disgrace in this world, and a heavy punishment is theirs in the Hereafter;
For the sake of our families future generations, we need to fight Sharia with all we have, otherwise they will suffer.