I'm pretty sure this is Greenplace by Tom Purdom. Many things match but some do not.

It starts with the protagonist being placed in a wheelchair by a large bodyguard. He then injects himself with a red (not blue) liquid. The bodyguard pushes him around the neighborhood and the inhabitants are hostile.

It ends

This campaign was going to be worse. He could imagine the efforts the Boyd organization would make to control the minds of himself and his friends. They would attack his psyche with every weapon in the modern arsenal. As plainly as it were a drama projected on a screen, he could see the psych technicians maneuvering across the Eighth Congressional District...

It was in the 1965 World's Best Science Fiction Carr and Wollheim collection.

You can read it online in the Internet Archive here.

I'm pretty sure this is Greenplace by Tom Purdom. Many things match but some do not.

It starts with the protagonist being placed in a wheelchair by a large bodyguard. He then injects himself with a red (not blue) liquid. The bodyguard pushes him around the neighborhood and the inhabitants are hostile.

It ends

This campaign was going to be worse. He could imagine the efforts the Boyd organization would make to control the minds of himself and his friends. They would attack his psyche with every weapon in the modern arsenal. As plainly as it were a drama projected on a screen, he could see the psych technicians maneuvering across the Eighth Congressional District...

It was in the 1965 World's Best Science Fiction Carr and Wollheim collection.

You can read it online in the Internet Archive here.

I'm pretty sure this is Greenplace by Tom Purdom. Many things match but some do not.

It starts with the protagonist being placed in a wheelchair by a large bodyguard. He then injects himself with a red (not blue) liquid. The bodyguard pushes him around the neighborhood and the inhabitants are hostile.

It ends

This campaign was going to be worse. He could imagine the efforts the Boyd organization would make to control the minds of himself and his friends. They would attack his psyche with every weapon in the modern arsenal. As plainly as it were a drama projected on a screen, he could see the psych technicians maneuvering across the Eighth Congressional District...

It was in the 1965 World's Best Science Fiction Carr and Wollheim collection.

I'm pretty sure this is Greenplace by Tom Purdom. Many things match but some do not.

It starts with the protagonist being placed in a wheelchair by a large bodyguard. He then injects himself with a red (not blue) liquid. The bodyguard pushes him around the neighborhood and the inhabitants are hostile.

It ends

This campaign was going to be worse. He could imagine the efforts the Boyd organization would make to control the minds of himself and his friends. They would attack his psyche with every weapon in the modern arsenal. As plainly as it were a drama projected on a screen, he could see the psych technicians maneuvering across the Eighth Congressional District...

It was in the 1965 World's Best Science Fiction Carr and Wollheim collection.

You can read it online in the Internet Archive here.