As for what some people do regarding activities of suicide, tying explosives to themselves and then approaching Unbelievers and detonating them amongst them, then this is a case of suicide...
Shaykh Muḥammad Amān al-Jāmī [rh] mentioned how many of the Muslims— being ignorant of the realities of their religion, that its legislation is fit and suited for all times and places...
The covenant of the guarantee of safety (dhimmāh) obligates certain rights upon us which are due to them (non-Muslims) because they are within our neighbourhood and under our protection and under the protection (dhimmah) of Allāh the Most High.
For shirk and invoking other than Allāh, setting up a deity besides Him or one who is obeyed and followed besides the Messenger [sas] is the greatest corruption on the Earth.
Shayh Bin Bāz’s explained his view very clearly in his article titled: ([arb]الأدلة العقلية والنقلية[/arb]) that the sun is in actual and absolute motion.