Whoever willfully or maliciously injures, tears down or destroys any letter box or other receptacle intended or used for the receipt or delivery of mail on any mail route, or breaks open the same or willfully or maliciously injures, defaces or destroys any mail deposited therein, shall be fined under this title or imprisoned not more ...
All of these sound like violations of the Criminal Damage Act of 1971.
The courts seem to construe "damage" fairly broadly, to include damage that affects an object's value or usefulness, so I'd imagine that removing signs or cameras or anything else would satisfy that definition.
I have bad news. California's vandalism law prohibits maliciously:
defacing property with graffiti
defacing property with inscribed material
Chalking the sidewalk probably doesn't sound very malicious, but maliciousness includes “an intent to do a wrongful act, established either by proof or presumption of law.” So the ...
The fault lies with the people who vandalized your house. In general, whoever causes you damage is responsible (liable) for that damage. This is true whether or not you are selling your house, having guests over, letting a friend stay over for a night or a week, or whatever the circumstance is. Insurance is there to cover many such losses: if a friend ...
If your concern is just that they're marking up your driveway without your permission, it probably doesn't matter whether it's "graffiti" as much as it matters whether it's illegal.
I can't find a record of any prosecution for the use of sidewalk chalk, but the behavior sounds like it fits within the description of criminal mischief (R.C. 2909.07):
With respect of Graffiti, this generally fall under vandalism, and with respect of Ohio law, chalk is unlikely to qualify under Ohio Revised Code Title XXIX. Crimes Procedure as there is unlikely to be any lasting damage.
Depending on what is being written, you might be able to do something about it under disorderly conduct laws.