I would like to know the law if they come down my street torching houses along with trying to set my house of fire and my cars.
You should find out. My state classifies arson as a felony, and force that may result in death or great bodily harm is justified to stop such a felony on your property, with no risk of civil lawsuit from the perpetrator.
720 ILCS 5/7-2) (from Ch. 38, par. 7-2)
Sec. 7-2. Use of force in defense of dwelling.
(a) A person is justified in the use of force against another when and to the extent that he reasonably believes that such conduct is necessary to prevent or terminate such other's unlawful entry into or attack upon a dwelling. However, he is justified in the use of force which is intended or likely to cause death or great bodily harm only if:
(1) The entry is made or attempted in a violent,
riotous, or tumultuous manner, and he reasonably believes that such force is necessary to prevent an assault upon, or offer of personal violence to, him or another then in the dwelling, or
(2) He reasonably believes that such force is
necessary to prevent the commission of a felony in the dwelling.
(b) In no case shall any act involving the use of force justified under this Section give rise to any claim or liability brought by or on behalf of any person acting within the definition of "aggressor" set forth in Section 7-4 of this Article, or the estate, spouse, or other family member of such a person, against the person or estate of the person using such justified force, unless the use of force involves willful or wanton misconduct.
(Source: P.A. 93-832, eff. 7-28-04.)