Why they are cruel.

If you read the old testament of the Jews you will notice that the God they follow tells them to do all kinds of  cruel and inhuman acts towards others. It is  in this tradition that modern Israel bombed and shot civilians including infants. The following are some of the acts they are persuaded to do by God:

GE 4:2-8 God's arbitrary preference of Abel's offering to that of Cain's provokes Cain to commit the first biblically recorded murder and kill his brother Abel.

GE 34:13-29 The Israelites kill Hamor, his son, and all the men of their village, taking as plunder their wealth, cattle, wives and children.

GE 6:11-17, 7:11-24 God is unhappy with the wickedness of man and decides to do something about it. He kills every living thing on the face of the earth other than Noah's family and thereby makes himself the greatest mass murderer in history.

GE 19:26 God personally sees to it that Lot's wife is turned to a pillar of salt (for having looked behind her while fleeing the destruction of Sodom and Gomorrah).

GE 38:9 "... whenever he lay with his brother's wife, he spilled his semen on the ground to keep from producing offspring for his brother. What he did was wicked ..., so the Lord put him to death."

EX 2:12 Moses murders an Egyptian.

EX 7:1, 14, 9:14-16, 10:1-2, 11:7 The purpose of the devastation that God brings to the Egyptians is as follows: to show that he is Lord; to show that there is none like him in all the earth; to show his great power; to cause his name to be declared throughout the earth; to give the Israelites something to talk about with their children; to show that he makes a distinction between Israel and Egypt.

EX 9:22-25 A plague of hail from the Lord strikes down everything in the fields of Egypt both man and beast except in Goshen where the Israelites reside.

EX 12:29 The Lord kills all the first-born in the land of Egypt.

EX 17:13 With the Lord's approval, Joshua mows down Amalek and his people.

EX 21:20-21 With the Lord's approval, a slave may be beaten to death with no punishment for the perpetrator as long as the slave doesn't die too quickly.

EX 32:27 "Put every man his sword by his side, and go in and out from gate to gate throughout the camp, and slay every man his brother, and every man his companion, and every man his neighbor.

EX 32:27-29 With the Lord's approval, the Israelites slay 3000 men.

LE 26:7-8 The Lord promises the Israelites that, if they are obedient, their enemies will "fall before your sword."

LE 26:22 "I will also send wild beasts among you, which shall rob you of your children."

LE 26:29, DT 28:53, JE 19:9, EZ 5:8-10 As a punishment, the Lord will cause people to eat the flesh of their own sons and daughters and fathers and friends.