Right of Context

In a world of so many contexts, who owns the right of context?

WTF used to safely mean World Taekwondo Federation.

Once, anyone named Najib wouldn't have problems.

My late grandfather labelled everything he owned with his initials, BJ.

I love Nips. Better than M&Ms.

And I participate in jihad every day.

When did my context become wrong and yours become right?