What Am I Riddles

Question: Black within and red without with four corners roundabout.

Question: I do good things, but one small push could be a horrid disaster! I am normally used for decoration now.

Question: I fly and never rest. What am I?

Question: I'll capture you, hold you, and to your dismay, drag you thru space and time, all in one day. Move 'cross the globe with a single command, now tell me what I'll subject you to at your demand.

Question: I am a thing, when I look at him , he looks at us!! who am I???