It is much better to bring in the word citizen.

Speaking in loose terms like somebody loses right to someone else might mean that the loss of rights by non citizens is critical in democracy when obviously it is not.

So again, the issue in democracy is not to know whether socialism or not.
The issue is to know how to build a strong group of citizens who is able to strip down non citizens from their rights.

It is the core. Then indeed, in democracy, it is possible to enforce citizens' rights and freedoms without this being at the expense of another citizens' rights and freedoms but at the expense of non citizens. Non citizens allows the group of citizens to avoid the dangerous issue of internal reorganisation.

Using the citizen word is needed to clearly show that in democracy, the source of rights is the group, non citizens and citizens being distinct groups.