Can I have a defensive spray?

I am frequently walking around Berkeley and am feeling unsafe. Is it legal for me to carry and use a defensive spray?

Defensive sprays are permitted on campus and in the City of Berkeley to people who are over 18 years of age who are not convicted felons. 

Before purchasing your canister, you should be aware of the laws concerning its use as well as other issues related to the physical effects of tear gas on human beings.