Query to find certain rows in a table

I have a table that looks like this:

Table

Name               Type               
------------------ ------------------ 
ID                 NUMBER
Parent_ID          NUMBER
Data               DOESN'T_MATTER
Active             NUMBER

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The data I have in that table is:

ID		parent_id	data		active
----------------------------------------------------
1		13		value_1		0
2		13		value_2		1
3		24		value_3		0
4		24		value_4		1
5		125		value_5		0
6		125		value_6		0
7		125		value_7		0
8		6		value_8		1
9		6		value_9		1
10		6		value_10	0

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I need a query that will give me the the rows where the 'Active' values column associated with that 'Parent ID' are all the same.

So for this example, I want the rows where the 'Parent ID' is 125 because the value in 'Active' columns are all 0.