What would happen if there were no limits on civil liberties?

The term 'civil liberties' doesn't allow for a 'no limits' option.

The term 'civil' tells us the liberties referred to are of paramount importance to the community and their scope is limited to, or decided by, the community in question. For a soft example, in some communities it is fine to go out with no head-covering; in others it isn't. That's easy to follow and harms nobody. In some communities, for a hard example, it is fine for family members to beat or kill men, women and children for perceived infringements of family or cultural rules; this is an infringement of the injured parties liberties.

A total lack of limits on the liberty of any citizen to do whatever they liked at any given moment for any reason or no reason at all would result in anarchy.

Anarchy is a situation where no governmental or social controls exist. In an anarchical situation any sense of community or personal responsibility does not exist and no personal responsibility is taken for any actions against members of the community involved. In a fairly short time that community will cease to exist, without survivors, or with very, very few. This has been shown for many decades by researchers.

In any civil society the community must be continually aware the notion of civil liberty is a vital part of their existence. Once one accepts the notion liberties accorded to some might not apply to others one accepts that civil liberties apply only to oneself. This concept isn't anarchy, but it does erode the humanity of every single member of that community, regardless of their status within that community.

So, we must retain a concious awareness of the rights of every single person to enjoy the liberty life should allow them. As the American Declaration of Independence demanded, every human owns the inalienable right to life, liberty, and the pursuit of happiness.

When we seek, as we continually do, to ensure this is the right of every person, we are seeking enforcement of civil liberties. By definition, we cannot possibly seek a 'no limits' situation on this because that might easily deny the civil liberties of others.

Civil liberties have no limits, but they come with built-in respect for the civil liberties of every other human in our global or local community.