Nowadays, how you are perceived as a person, is largely based on your personal data, and on how these personal data are being used by companies, organizations, and governments. If you control the data they store on you, you control your identity.
That’s what GDPR is about
The European General Data Protection Regulation (GDPR) wants to protect your identity, by protecting why, how, and where your personal data are stored and used. The only issue is, that you have to knock on many doors to enforce your rights.