Family-owned and operated organizations can also feel like family to employees. Often, their family-owned and non-union, because the family treats employees with respect and pays them well. I've worked for one for over 33 years. Sometimes, I see what you are talking about in the workplace, but, when I look elsewhere, the situations are no better, less pay, or worse. The final decision is yours, in the end, so our advice is fleeting. 

The sabotage on your car...set up your own security. Don't go to HR unless you can prove your case, without their technology.