Answer:
I am black within and red without With four corners round about.
To you, rude would I never be, though I flag my tongue for all to see. What am I?
I go up and I go down, towards the sky and the ground. Iβm present and past tense too, letβs go for a ride, me and you. What am I?
I have memories, but none of my own. Whatever's on my inside is what is shown. If I'm ever different, it's because you changed me. I feel like a decoration, here for you to arrange me. What am I?
I build bridges of silver and crowns of gold. What am I?
I am a rock group with four members. All dead one was assassinated.