How can we do object filtering in Entity Framework?

When defining an object context, using code first in entity framework, for example:

public class DomainContext : DbContext
{
    public DomainContext() { }
    public virtual DbSet<News> News { get; set; }
}

We all know that you can query "News" doing something like (for example, to get all news that were published today):

var ctx = new DomainContext();
ctx.News.Where(x => x.PublishedDate == DateTime.Now.Date)

But, and this is the question: Is there a way to apply a pre-defined filtering/condition to all queries that pass through ctx.News? Say that I wanted that all queries on ctx.News to have the "Published Today" filtering implicit applied?