Many many years ago a lady decided that she would park in front of my house and live in her car. My then wife was pregnant and it stressed her out. I asked the lady if she could please park elsewhere and she refused. She had mild schizophrenia, and had some things she believed that made her refuse.
There were plenty of options as it was an area that had many places to park that weren't in front of a/my house which were just fine. A few times I politely tried to talk to her and even offered some ideas of how to find help so she wasn't in that situation. She refused any advice and was rather hostile with my requesting she relocate, if only around the corner or in front of the church that was literally next door.
I finally had to call the police, who came out a few times with bad results. Her yelling, them trying to be kind while firm. So it went on and finally I had had enough. I called the police and went up the chain. They found the correct statue and asked her to please please move her car. She refused. They towed it.
It really sucked, and I felt terrible. But I was also relieved and thankful it was over. Ironically, I ended up meeting her son, who was a good guy. I apologized for having her car towed, and told him I felt bad about it. He said he completely understood and would have done the same thing if it were him. She refused help from her family and friends. And she was stuck in her situation because of that.
To this day I feel sad about that entire situation. But I would do it again.
When you're upset about people not understanding your exact situation, remember this. There are a lot of people that have dealt with her situation more than your situation. And no one really wants to sit down to talk and find out which it is.
So you can be angry they "people don't care", or that "people feel a certain way" about those living in vehicles. But in their eyes it doesn't look that different, and it's a stressful situation.
You could be a good person just living your life.
You could be mentally challenged and be somewhat erratic.
You could be living a lifestyle that includes things they don't want to be around. Drugs, alcohol, and many other things.
Or you could just be poor and in a bad situation and making the best of it.
I think most people understand that these situations exist. They just don't know which one you're in. And it's not their job to figure it out.
So be respectful. Take care of your things. Show consideration. And if people have a problem with you being by their place, it isn't that hard to move to another spot. Easier for you than for them to move most certainly.
There are jerks everywhere. Living in sticks and bricks. Living in vehicles. Don't assume they should see the best case scenario because you know who you are. They don't know what they don't know. And again. It's not their job to figure it out.