Palestinians never attacked civilians until (i think it was) 1994 after a settler freak machine gunned a mosque killing and wounding many civilians. A month or so later was the first suicide bombing.
In 2006 Hamas called for a cease fire. That year 23 Israelis were killed. Israel killed almost 500 Palestinians.
I found these:
List of terrorist incidents - Wikipedia, the free encyclopedia
1968 26 December: Two Palestinian gunmen travelled from Beirut to Athens and attacked an El Al jet there, killing one person.
1970 May 8: Avivim school bus attacks by Palestinian PLO members, killing nine children and three adults and crippling 19 children.
1972 September 5: Black September kidnaps and kills eleven Israeli Olympic athletes and one German policeman in the Munich Massacre.
1974:
April 11: Kiryat Shmona massacre at an apartment building by the Popular Front for the Liberation of Palestine members, killing 18 people, nine of whom were children.
May 15: Ma'alot massacre at the Ma'alot High School in Northern Israel by Popular Front for the Liberation of Palestine members: 26 of the hostages were killed, 66 wounded.
1975 March 5: In the Savoy Operation, Palestine Liberation Organization gunmen from Lebanon take dozens of hostages at the Tel Aviv Savoy Hotel, eventually killing eight hostages and three IDF soldiers, and wounding eleven hostages.
1978:
Israel: Members of the Arab Revolutionary Council poison Israeli oranges with mercury, injuring at least twelve people and reducing exports by 40 percent.
Israel, March 11: Coastal Road massacre: Fatah gunmen killed several tourists and hijack a bus near Haifa; 37 Israelis on the bus are killed.
...and so on...
it looks pretty deadly for civilians.