How to Use "unjustified" with Example Sentences

1. This smacks of unjustified optimism .
2. I regard class distinctions as unjustified and , in the last resort , based on force .
3. Though not wholly unjustified , it glides over a history filled with many disappointments .
4. Yet this additional gloom is unjustified even though the diplomatic mood is bleak .
5. Critics think this gives the american authorities unjustified powers , for example to boot undesirable websites off the internet .