young people are not kind enough to elderly people.

Some people say that young people today are not kind enough to elderly people. What do you think about that?

【Answer】

I do not think that young people are not kind enough to elderly people.

First of all, that mind is not recently thing.
It's not a recent thought.
It's not a recent problem.
It hasn't been a problem recently.
I'm not entirely sure what you mean. 

Exactly, young people were not kind enough to elderly people until few years ago, but today is not.
To be more specific/sure, .... , but today it's different. 

For example, my friends have mind which believe that it is important to be kind to elderly people.

Also, SNS is stopping it If you do rudeness thing are rude  to elderly people you can just write to the elderly as well, you are show off at sns such as Twitter
I have no idea what's SNS - social network? We'd say social media.
Show off - to brag, to speak a lot about something you've done - is this what you want to say?  

Due to the reasons above For those reasons , I do not agree with this question. the above statement.
You cannot disagree with questions.